This page is general health information, not medical advice. It cannot tell you whether you have an infection. A clinician can, and the testing options on this site are a good place to start.

Many sexually transmitted infections (STIs) cause no symptoms at all. That is the most useful thing to know before reading anything else. It means that how you feel is not a reliable guide to whether testing makes sense.

This guide covers the symptoms of STDs in women and people with a vagina, what each infection can look and feel like, and which signs call for a prompt visit. It also explains how pelvic inflammatory disease connects to fertility, when screening is recommended, and where to get an STD test for women in Tucson at no cost or a low cost. It is written for every gender and orientation. Anyone with a cervix, vagina or vulva may find it useful.

Key takeaways

Many STIs in women cause no symptoms. The CDC says chlamydia and gonorrhea often have none, so testing is the only way to find out.
Unusual discharge, burning when urinating, pain during sex, bleeding between periods, sores, bumps and lower belly pain are all reasons to get tested.
Untreated chlamydia and gonorrhea can lead to pelvic inflammatory disease (PID), which can affect fertility. Bacterial STIs are curable with treatment from a clinician.
Severe pelvic pain with fever, or possible HIV exposure in the last 72 hours, is a same-day situation.
Pima County Health Department clinics use a sliding fee scale, and the county says nobody is turned away for inability to pay. Call before you go.

In this guide

Why many STIs in women cause no symptoms
Symptoms by infection
Signs that are a reason to get tested
Pelvic inflammatory disease and fertility
When to see a clinician the same day
When to get an STD test for women, and how timing works
Where to get tested in Tucson
Sources

Why many STIs in women cause no symptoms

People often expect an infection to announce itself. Many STIs do not. The CDC states that chlamydia and gonorrhea frequently cause no symptoms in women. The CDC also says that most people with trichomoniasis have no signs or symptoms.

There are a few reasons this happens. The cervix is inside the body, so infections there can sit unnoticed. Mild discharge or spotting is easy to explain away as a normal cycle variation. Infections in the throat or rectum rarely cause noticeable changes. Some infections, like HPV, are usually cleared by the immune system without ever being felt.

The practical result is simple. A person can feel completely well and still have an infection that a test would find. A person with symptoms may also find that the cause is not an STI, because several non-sexually transmitted conditions look similar. Neither situation can be sorted out by guessing. A test, and a conversation with a clinician, can.

Screening is built around this

Because symptoms are unreliable, national guidance is based on who to test, not just who feels unwell. The CDC STI Treatment Guidelines (2021) and the US Preventive Services Task Force (USPSTF) both recommend chlamydia and gonorrhea screening for sexually active women under 25. They also recommend it for older women who have risk factors, such as a new partner, more than one partner, or a partner who has an STI.

The CDC also recommends HIV testing at least once for everyone aged 13 to 64, and more often for people with ongoing risk. The USPSTF recommends HIV screening for ages 15 to 65. Screening is routine health care. It is not a sign that anything is wrong.

Symptoms by infection

The symptoms of an STD in a female patient depend on the infection, where it is in the body, and the person. The lists below describe what the CDC says each infection can cause. They are not a checklist for self-diagnosis. Many signs overlap, and only a clinician or a lab test can tell them apart.

Chlamydia

Chlamydia is the most commonly reported bacterial STI in the United States, according to the CDC. When it causes symptoms in women, they can include:

Unusual vaginal discharge
Burning or pain when urinating
Pain during sex
Bleeding between periods or after sex
Lower belly or pelvic pain

Chlamydia is curable with treatment from a clinician.

Gonorrhea

Gonorrhea can look much like chlamydia, and the two are often tested together. The CDC lists increased or changed discharge, burning with urination, and bleeding between periods as possible signs. Like chlamydia, it is frequently silent. Gonorrhea is curable with treatment from a clinician. Because antibiotic resistance is a concern for gonorrhea, the CDC guidelines are updated periodically, and a clinician chooses the treatment.

Trichomoniasis

Trichomoniasis is caused by a parasite. The CDC says most people have no symptoms. When symptoms appear, they can include itching, burning, redness or soreness of the genitals, discomfort with urination, and a change in discharge, sometimes with an odor. Trichomoniasis is curable with treatment from a clinician.

Genital herpes

Many people with genital herpes have mild symptoms or none, and may not know they carry the virus. When symptoms occur, the CDC describes one or more blisters or sores on or near the genitals, anus or thighs. These can be preceded by tingling, itching or burning. The first outbreak can also come with fever, body aches or swollen glands. Herpes is not curable, but it is manageable. A clinician can prescribe medicine that reduces outbreaks.

HPV and genital warts

Human papillomavirus (HPV) is very common, and the CDC says most infections clear on their own without causing problems. Some types cause genital warts, which are small bumps or clusters of bumps. Other types can cause changes in cervical cells that lead to cancer over time. Those changes usually produce no symptoms, which is why cervical cancer screening matters. HPV has no cure, but the infection often resolves, and warts and cell changes are treatable. A vaccine is also available. A clinician can explain who it is recommended for.

Syphilis

Syphilis moves in stages, and the early signs are easy to miss. The CDC describes a firm, round, usually painless sore at the spot where the infection entered the body. In women this can be inside the vagina or on the cervix, where it may go unseen. Weeks later, a rash can appear, often including the palms of the hands and soles of the feet, sometimes with fever, swollen glands, sore throat, patchy hair loss or fatigue. These signs can fade without treatment while the infection remains. Syphilis is curable with treatment from a clinician, and treating it early prevents serious later problems.

HIV

Some people have a flu-like illness, with fever, sore throat, rash, swollen glands or tiredness, within a few weeks of HIV infection, according to the CDC. Many others notice nothing. Only an HIV test gives a real answer. HIV is not curable, but it is very treatable. The CDC says that with treatment, people with HIV can live long, healthy lives.

Conditions that look similar but are not usually classed as STIs

Bacterial vaginosis, yeast infections and urinary tract infections can all cause discharge, itching, odor or burning with urination. These are common and treatable, and they are not the same as the infections above. A person can also have one of them and an STI at the same time. If symptoms are new or keep returning, a clinic visit that includes STI testing is a reasonable way to sort it out.

Signs that are a reason to get tested

You do not need to be sure something is an STI to ask for testing. The following changes are all good reasons to book a visit:

Discharge that is new, a different color or amount, or has a new odor
Burning or pain when urinating, or needing to urinate more often
Pain or bleeding during or after sex
Bleeding between periods that is not typical for you
Sores, blisters, bumps, itching or a rash on or near the genitals, anus or mouth
Lower belly or pelvic pain that is new or does not go away
A sore throat or anal discomfort after oral or anal sex, particularly alongside any other sign
A partner who tells you they have been diagnosed with an STI

Testing is also reasonable with no symptoms at all. Reasons include a new partner, a change in relationship, a condom that slipped or broke, or simply wanting to know your status before starting something new. None of these is a moral matter. They are ordinary points at which health care checks in.

If your partner has been diagnosed with an STI, tell the clinician. Arizona has a legal framework for treating partners. The CDC's summary of Arizona law on expedited partner therapy notes that state law excludes prescribing for a contact with significant exposure from the definition of unprofessional conduct. Ask your clinician whether this applies to your situation.

Pelvic inflammatory disease and fertility

Pelvic inflammatory disease (PID) is an infection of the uterus, fallopian tubes or ovaries. The CDC says it often develops when bacteria from an STI, especially chlamydia or gonorrhea, travel up from the cervix and are not treated.

PID can be mild enough to go unnoticed. When it does cause symptoms, the CDC lists lower belly pain, pain during sex, unusual discharge, bleeding between periods, fever, and pain when urinating.

Why PID matters for later health

According to the CDC, PID can cause scarring in the reproductive organs. That scarring can lead to long-term pelvic pain, ectopic pregnancy (a pregnancy outside the uterus) and difficulty getting pregnant. The CDC reports that about 1 in 8 women with a history of PID have trouble getting pregnant.

This is not a reason for fear. It is a reason to treat bacterial infections early. PID is treated with antibiotics prescribed by a clinician, and the CDC says that early treatment lowers the chance of lasting complications. Because chlamydia and gonorrhea are often silent, regular screening is one of the main ways to catch them before they reach that point.

If you have been told you had an STI in the past and are now thinking about pregnancy, mention it to your clinician. They can talk through what, if anything, is worth checking.

Pregnancy and screening

Some STIs can affect a pregnancy. Arizona law, A.R.S. 36-693, requires a physician to test a pregnant woman's blood for syphilis at the first prenatal examination after a diagnosis of pregnancy. The statute says the state laboratory performs the test without charge. The CDC also recommends early prenatal screening for HIV and hepatitis B.

The reason is serious but manageable. Syphilis can pass to a baby, causing congenital syphilis. The Pima County Health Department's STI page says that syphilis is on the rise in the county. AZPM News reported 53 confirmed congenital syphilis cases in Pima County in 2024, with early county data suggesting about 24 in 2025. That 2025 number is provisional. Prenatal testing and treatment are how this is prevented.

When to see a clinician the same day

Most STI concerns can be handled with a scheduled visit. A few situations call for faster care.

Severe pelvic or belly pain, especially with fever, chills, nausea or vomiting. These can be signs of PID or another condition that needs prompt attention.
Pelvic pain while pregnant, or a positive pregnancy test with pain or heavy bleeding. Ectopic pregnancy and other pregnancy complications need urgent care.
Possible HIV exposure in the last 72 hours. The CDC says post-exposure prophylaxis (PEP) should be started as soon as possible and within 72 hours. A clinician prescribes it. In Tucson, the Pima County STI page lists the Banner Emergency Department at 1501 N. Campbell Ave for urgent PEP after an exposure.
Sexual assault. You deserve care that is not rushed, and an emergency department can provide it. Testing, preventive treatment and support can all be offered, and you decide what you want.
Painful sores with fever, or sores that make urinating very difficult. A clinician can examine them and treat the cause.
Fainting, confusion or trouble breathing. Call 911.

If you are unsure whether a situation is urgent, call a clinic or a nurse line and describe what is happening. Staff hear these questions every day.

When to get an STD test for women, and how timing works

Routine timing

The CDC and the USPSTF recommend yearly chlamydia and gonorrhea screening for sexually active women under 25, and for older women with risk factors. Your clinician may suggest testing at different intervals based on your partners and health. Getting tested again after a new partner is common practice.

Window periods

A window period is the time between an exposure and the point when a test can reliably detect an infection. Different tests have different windows. The CDC publishes HIV windows, and they vary by test type:

Nucleic acid tests can detect HIV about 10 to 33 days after exposure.
Antigen and antibody tests done on blood from a vein can detect it about 18 to 45 days after exposure.
Antigen and antibody tests done on a finger-stick sample can take about 18 to 90 days.
Antibody-only tests can take about 23 to 90 days.

If you test within the window and the result is negative, a clinician may suggest testing again later. For other infections, ask the clinic how soon after an exposure a test is useful. If you have symptoms, do not wait for a window to pass before being seen.

What testing usually involves

For chlamydia and gonorrhea, the CDC guidelines say a vaginal swab is the preferred sample for women, and it can often be collected by the patient. A urine sample is another option. A swab may also be taken from the throat or rectum, depending on the sexual contact you have had. Syphilis and HIV are checked with a blood sample. Herpes testing is typically done on a sore if one is present. Cervical cancer screening is a separate test that looks for HPV or cell changes.

You can tell the clinician which tests you want, and you can ask what each one covers. Results timing varies by clinic and test. If a clinic does not state how long results take, ask when you book.

Doxy-PEP and who it is for

In 2024 the CDC issued guidance on doxycycline taken after sex to lower the chance of certain bacterial STIs, often called doxy-PEP. That guidance recommends it for gay, bisexual and other men who have sex with men, and for transgender women, who had a bacterial STI in the past 12 months. The CDC did not extend the recommendation to cisgender women because the evidence was limited. Anyone curious about it can raise it with a clinician. Whether a particular Tucson clinic offers it is not something the clinics' public pages state, so ask when you call.

Privacy and consent

Under Arizona law, A.R.S. 44-132.01, a minor who may have a venereal disease can consent to medical care for its diagnosis or treatment. The statute says a parent's, guardian's or legal custodian's consent is not required. Pima County's STI and HIV page also states that minors do not need parental consent at its clinics.

Arizona also requires reporting of certain infectious diseases to the health department, under A.R.S. 36-621. Reporting is done by clinicians and labs. It is how public health tracks and responds to outbreaks.

Where to get tested in Tucson

Tucson has several options. Pima County is the public health authority for the city. The Pima County Health Department reports that in 2023 the county's chlamydia rate was 555 per 100,000 people, its gonorrhea rate was 172 per 100,000, and its rate of primary and secondary syphilis was 26.1 per 100,000. For comparison, the same page lists Arizona at 552.5 for chlamydia, 190.7 for gonorrhea and 24.1 for primary and secondary syphilis. These infections are common, and testing is a normal part of care here.

For a fuller comparison of options and costs, see the guide to STD testing in Tucson: where to get tested and what it costs. The quick list below covers the main choices, and the local testing list on the homepage has the rest.

Pima County Health Department clinics

The county runs two clinics that offer STI and HIV testing, treatment and PrEP services. The county's page says it uses a sliding fee scale based on income and that nobody will be turned away for inability to pay.

Theresa Lee Public Health Center, 1493 W. Commerce Court, Tucson, AZ 85746. Phone 520-724-7900.
Pima County Northwest Clinic, 1010 W. Miracle Mile, Tucson, AZ 85705. Phone 520-724-2880.

Call before you go. The county's HIV and STI page says clients are seen on a walk-in basis, while its Clinic Hours page lists HIV and STI testing at Theresa Lee as by appointment only. Those two pages do not agree, so a phone call will settle it. The Clinic Hours page also says no services are offered from noon to 1 p.m. daily, and the clinics are closed on the first Thursday of every month. The Northwest Clinic's page lists HIV and STI testing without specific hours, so confirm them by phone.

The county's HIV and STI page and clinic hours page have the latest details.

Southern Arizona AIDS Foundation (SAAF Health)

SAAF is at 375 S. Euclid Avenue, Tucson, AZ 85719. Phone 520-628-7223, or toll-free 800-771-9054. SAAF's website says that making an appointment is the best option, with a walk-in window on Wednesday evenings from 5 to 7 p.m. Weekday testing hours are Tuesday, Thursday and Friday mornings, and Monday, Tuesday and Wednesday afternoons. It says its rapid HIV test gives results in about 20 minutes. The CDC's GetTested listing for SAAF lists free HIV, hepatitis B, hepatitis C, chlamydia, gonorrhea and syphilis testing, and notes that eligibility should be confirmed with SAAF. SAAF's own testing page does not list the STI tests, so ask when you call.

Planned Parenthood Southern Arizona Regional Health Center

The center is at 2255 N Wyatt Dr, Tucson, AZ 85712. The 211 Arizona listing gives the phone as 520-408-7526 and lists STI and HIV testing, PrEP, PEP, HPV vaccine and treatment services, with walk-ins accepted. Fees are listed only as varying. The listing shows weekday hours that differ by day, and other directories show a different phone number and different hours, so confirm by phone before you go.

El Rio Health

El Rio is a federally qualified health center. The CDC's GetTested directory lists testing for chlamydia, gonorrhea, syphilis and HIV at El Rio, with herpes and hepatitis testing at the Congress Street site. It says an appointment is required and that insurance, Medicaid, Medicare and a sliding scale are accepted. The directory says to contact El Rio about eligibility.

Congress Street: 839 W Congress St, Tucson, AZ 85745. Phone 520-670-3909.
Southeast Campus: 6950 E Golf Links Rd, Tucson, AZ 85730. Phone 520-670-3909. El Rio's page lists general health center hours of Monday to Friday, 7 a.m. to 7 p.m., which are not specific to STI care. No fee amounts are published.

El Rio's own pages did not confirm the STI services, so ask when you call.

University of Arizona Campus Health Service

Campus Health offers Express STI Testing for gonorrhea and chlamydia for students without symptoms, at a flat fee of $65 that is not billed to insurance, with no appointment needed. The page states this service is for students only. Students with symptoms can call 520-621-9202 to schedule. This is not a public clinic.

Other ways to find a clinic

The CDC's GetTested locator lets you search for testing sites by ZIP code and filter by service. Because directories can lag behind real hours and services, confirm with the clinic before you travel. Get Tested AZ, run by Aunt Rita's and HIV AZ, offers free at-home HIV test kits after an online survey. Its site does not state eligibility rules and lists no at-home STI kit, so ask them directly.

Tips for the visit

Tell the clinician about any symptoms, even ones that seem small or embarrassing. They have heard it before.
Mention the kinds of sex you have had, so the right sites can be checked.
Ask what is included in the tests and when you will hear results.
If you are treated for a bacterial infection, ask when it is safe to have sex again and whether partners should be tested.
Ask about PrEP and the HPV vaccine if they are relevant to you.

Whatever you find out, you have options. Bacterial STIs and trichomoniasis are curable with treatment from a clinician. HIV, herpes and HPV are not curable, but all three are treatable or manageable, and a clinician can walk you through the next steps.

STD Symptoms in Women: Signs, When to Test and Where in Tucson