When Can You Have Sex Again After STD Treatment? A Clinician's Guide

The answer to "when can I have sex again after treatment" is specific to the infection, not a single universal number. Getting this wrong in either direction matters — having sex too early risks reinfection and transmission; unnecessary abstinence causes relationship stress without clinical benefit. Here are the actual guidelines by infection.

Quick answer: Chlamydia and gonorrhea: wait 7 days after completing treatment AND until your partner has also completed theirs. Syphilis: wait until all sores have healed (typically 2–4 weeks after treatment). Herpes: wait until the outbreak has fully resolved; there is no "all clear" date for chronic infections. HIV: U=U — undetectable viral load means effectively zero transmission risk during sex. Trichomoniasis: 7 days after both partners complete treatment. Testing available in Los Angeles, Dallas, Tampa, Columbus, and Las Vegas.

Chlamydia and Gonorrhea: 7 Days

The standard recommendation is to abstain from all sexual contact — including oral sex — for 7 days after completing treatment AND until all recent sexual partners have also completed theirs. The 7-day period applies whether you received a single-dose treatment (azithromycin 1g for chlamydia, ceftriaxone IM for gonorrhea) or a multi-day course (doxycycline for 7 days).

The partner requirement is not optional. The most common cause of a positive retest 3 months after treatment is reinfection from an untreated partner. If your partner hasn’t been treated, waiting 7 days does nothing — you’ll reacquire the infection on day 8. Both partners must complete treatment before any sexual contact resumes.

Retesting 3 months after treatment is recommended — not to confirm treatment worked, but because reinfection within 3 months is common enough to warrant routine surveillance.

Syphilis: Until Sores Are Fully Healed

For primary syphilis (chancre), abstain until the sore has completely resolved. This typically takes 2–4 weeks after penicillin treatment, though the sore begins healing within the first week. Do not resume sex while any sore or rash is present — syphilis lesions are highly infectious on direct contact.

For secondary syphilis, wait until all skin rash and mucous patches have resolved. Mucous patches in the mouth, vagina, or anus are highly infectious and should be fully healed before resuming any relevant sexual activity.

Follow-up blood tests (RPR or VDRL) at 6 and 12 months after treatment confirm that the serological response is adequate. Your clinician will use these results to determine if additional treatment is needed.

Herpes: Until the Outbreak Resolves

During an active herpes outbreak (visible sores, blisters, or ulcers), abstain completely — this is the highest-risk period for transmission. Wait until all sores have fully healed: skin has returned to normal appearance, no crusting, no tingling or pain. This typically takes 7–14 days for a first outbreak and 3–7 days for recurrent outbreaks.

The critical point for long-term management: between outbreaks, asymptomatic viral shedding occurs on approximately 15–20% of days. There is no equivalent of a “cured” status or an “all clear” period for herpes. Ongoing risk communication with partners, suppressive antiviral therapy (which reduces shedding by approximately 50–80%), and consistent condom use are the tools for managing transmission risk in established relationships.

HIV: U=U Applies

The PARTNER and PARTNER2 studies established that a person with HIV on effective antiretroviral therapy with a sustained undetectable viral load has effectively zero risk of sexually transmitting HIV to a negative partner — the U=U (Undetectable = Untransmittable) principle, endorsed by the CDC. This changes the conversation significantly. The relevant question is not “when can I have sex again” but “when is my viral load stably undetectable.” That typically takes 3–6 months after starting ART for most people.

During the period before viral suppression is achieved, condoms and PrEP for negative partners are the risk reduction tools.

Trichomoniasis: 7 Days

Standard recommendation: wait 7 days after both partners complete treatment (metronidazole or tinidazole, typically single dose or 7-day course). Reinfection rates for trichomoniasis are high — up to 17% within 3 months — largely due to untreated partners. Retesting 3 months after treatment is recommended for the same reason as chlamydia.

Frequently Asked Questions

If I feel completely better, can I have sex sooner?

No. Feeling symptom-free is not the same as being non-infectious. Chlamydia and gonorrhea require 7 full days for the bacteria to clear regardless of symptom resolution. Syphilis sores must be fully healed. For all bacterial infections, the 7-day wait is based on antibiotic pharmacokinetics, not symptom resolution.

Do I need to use condoms once treatment is finished?

For curable infections (chlamydia, gonorrhea, syphilis, trichomoniasis) after confirmed treatment of both partners: ongoing condom use is recommended as a general prevention measure but is not mandatory for re-exposure to the same infection from a treated partner. For herpes and HIV: ongoing risk reduction measures apply regardless of treatment status.

What if my partner refuses to get tested or treated?

This is a genuine clinical and relationship problem. If your partner will not be tested or treated, resuming unprotected sex means reinfection is essentially certain for bacterial STDs. Expedited partner therapy (EPT) — where you can provide medication for your partner without them attending a clinic — is legal in many US states and is a practical tool in this situation.

Related: Chlamydia Treatment · How to Tell Your Partner · Herpes Myths Debunked · How to Read Your Test Results · Get tested today →