Most STD symptoms appear within a few days to a few weeks after exposure, but the timeline varies dramatically depending on the infection. Some show up in under a week, others take months, and many never cause noticeable symptoms at all. Here’s what to expect for each major STD.
Chlamydia: 5 to 14 Days
When chlamydia does cause symptoms, they typically start 5 to 14 days after exposure. You might notice unusual discharge, burning during urination, or pelvic discomfort. But here’s the critical detail: the vast majority of chlamydia infections are silent. Only about 11% to 33% of infections in men and 6% to 17% in women ever produce symptoms. That means most people with chlamydia have no idea they’re infected and can pass it on without knowing.
Gonorrhea: 5 to 10 Days
Gonorrhea tends to show up a bit faster, especially in men. Symptoms of a genital tract infection in men often start within five days of exposure, while women typically notice symptoms within 10 days. In men, the signs are hard to miss: painful urination and a thick discharge. Women may experience similar symptoms but at lower intensity, and many women with gonorrhea remain asymptomatic entirely.
Genital Herpes: 2 Weeks or Much Longer
The first herpes outbreak often occurs within two weeks of contracting the virus. That initial outbreak is usually the most intense, with painful blisters or sores around the genitals, sometimes accompanied by flu-like symptoms and swollen lymph nodes. It can last two to four weeks.
What makes herpes tricky is how inconsistent the timeline can be. Some people don’t experience their first outbreak until months or years after infection. And most people carrying the virus that causes genital herpes never develop recognizable symptoms. Studies of people who tested positive for the virus found that nearly all of those with antibodies had never had noticeable symptoms. This is a major reason herpes spreads so easily.
HIV: 2 to 4 Weeks
The earliest stage of HIV infection generally develops within two to four weeks after exposure. During this acute phase, some people experience flu-like symptoms: fever, headache, rash, sore throat, swollen glands, and muscle aches. These symptoms can be easy to dismiss as a cold or the flu, and they resolve on their own. After that, HIV can remain silent for years while it gradually damages the immune system, which is why early testing matters far more than waiting for symptoms.
Syphilis: 3 Weeks to 3 Months
Syphilis progresses through distinct stages, each with its own timeline. The first sign is a painless sore called a chancre, which appears at the site of infection. This sore typically shows up about three weeks after exposure, though it can take longer. Because the sore is painless and sometimes hidden (inside the vagina, rectum, or mouth), many people never notice it. It lasts three to six weeks and heals on its own whether or not you get treated.
The second stage brings a body rash that can appear while the initial sore is still healing or several weeks after it’s gone. This rash often shows up on the palms of the hands and soles of the feet. Without treatment, syphilis eventually moves into a latent phase with no symptoms at all, but continues to cause internal damage.
HPV and Genital Warts: Months
HPV is one of the slowest STDs to show visible signs. When the virus does cause genital warts, the average incubation period is about 3 months for women and 11 months for men. Many strains of HPV never cause warts at all. The body’s immune system clears most HPV infections within one to two years without any symptoms ever appearing, but certain high-risk strains can silently lead to cell changes that, over years, increase cancer risk.
Hepatitis B: 1 to 4 Months
Hepatitis B symptoms usually start one to four months after infection, though some people notice them as early as two weeks. Symptoms include fatigue, nausea, abdominal pain, dark urine, and jaundice (yellowing of the skin and eyes). Many adults clear the infection on their own, but some develop a chronic infection that persists without obvious symptoms for years while slowly affecting the liver.
Trichomoniasis: 5 to 28 Days
Trichomoniasis, caused by a parasite rather than a virus or bacterium, typically produces symptoms within 5 to 28 days. Women may notice itching, burning, unusual discharge with a strong odor, or discomfort during urination. Men with trichomoniasis rarely have symptoms, which makes them common unknowing carriers.
Why Symptoms Alone Are Unreliable
The most important takeaway from all these timelines is that waiting for symptoms is not a reliable strategy. Many of the most common STDs, including chlamydia, herpes, and HPV, are asymptomatic in the majority of people who carry them. You can be infected, feel completely fine, and still transmit the infection to a partner.
Standard screening tests can detect infections like chlamydia and gonorrhea even before symptoms appear. For HIV, modern tests can detect the virus within a few weeks of exposure. If you’ve had a potential exposure, getting tested on the right schedule gives you a much clearer picture than monitoring how you feel. Testing windows differ by infection, so let the clinic or provider know when the exposure happened so they can advise on timing.