Can I Still Have Kids with an STI?

This question comes up in the first week after an STI diagnosis more often than almost any other. It is asked with fear: have I lost the chance to have a family?

The answer for nearly every STI is the same: yes, with the right prenatal care, you can have a healthy pregnancy and a healthy baby. Below is the honest current picture for each major STI — what changes about your pregnancy, what the actual risk to the baby is, and what modern medicine can do to protect them.

HIV

Can you get pregnant? Yes. HIV does not directly affect fertility for women, and modern antiretroviral therapy means you have the same fertility window as anyone else.

Will the baby have HIV?

With proper antenatal management, mother-to-child transmission of HIV in high-income countries is under 1%. Specifically:

  • Mother on antiretroviral therapy throughout pregnancy with suppressed viral load: transmission rate ~1% or lower
  • Mother starting ART late in pregnancy or with detectable viral load: higher, up to 5-10%
  • Mother not on ART: 15-25% transmission rate

What pregnancy with HIV looks like:

  • Continue antiretroviral therapy throughout pregnancy (some regimens are pregnancy-preferred — your provider switches if needed)
  • Viral load monitoring monthly
  • Standard OB care plus specialist coordination
  • Delivery: vaginal delivery is fine if viral load is undetectable late in pregnancy; C-section if detectable
  • Baby gets prophylactic antiretrovirals for 4-6 weeks after birth
  • No breastfeeding in the US — formula feeding is recommended because breast milk can transmit HIV even when the mother is undetectable
  • HIV testing for baby at 14-21 days, 1-2 months, 4-6 months

Conception with HIV:

  • Mother HIV+, father HIV-negative: undetectable viral load → conception via condomless sex is now considered safe given U=U
  • Father HIV+, mother HIV-negative: sperm washing or pre-exposure prophylaxis for the mother is one approach; U=U-based unprotected conception is another (if father has been undetectable for 6+ months)

Herpes (HSV)

Can you get pregnant? Yes. Herpes does not affect fertility.

Will the baby have herpes?

Neonatal herpes is rare but serious. The risk depends entirely on whether the mother is having a first outbreak around delivery (high risk) or has had herpes for years (low risk).

  • Mother with longstanding herpes, no outbreak at delivery: Risk to baby ~0.04% — extremely low
  • Mother with longstanding herpes, active outbreak at delivery: Risk ~3-5% — C-section recommended
  • Mother newly infected with HSV in late pregnancy: Risk 30-50% — major concern

What pregnancy with herpes looks like:

  • Tell your OB at the first visit. They take this seriously.
  • Daily suppressive valacyclovir starting around 36 weeks of pregnancy — reduces outbreak risk at delivery
  • Visual inspection during labor: if active lesion or prodrome present → C-section
  • If no active lesion → normal vaginal delivery
  • Baby is monitored for signs of neonatal herpes (rare but serious — high fever, lethargy, seizures) in the first 6 weeks
  • Breastfeeding is generally fine unless there is a lesion on the breast

HPV

Can you get pregnant? Yes. HPV does not affect fertility.

Will the baby have HPV?

Transmission of HPV from mother to baby is uncommon but possible:

  • Genital warts at delivery: Small risk of recurrent respiratory papillomatosis (RRP) in the baby — about 1 in 1,500. Rare but serious.
  • Cervical HPV without warts: Vertical transmission can occur but usually clears from the baby in the first months.

What pregnancy with HPV looks like:

  • Pap test at first prenatal visit (and follow-up if abnormal)
  • Genital wart treatment: cryotherapy or TCA is safe in pregnancy; podofilox and imiquimod are NOT
  • If extensive genital warts at delivery: C-section is sometimes recommended to reduce baby's exposure
  • Most HPV in pregnancy resolves the same way it does in non-pregnant people — the immune system clears it
  • HPV vaccine is NOT given during pregnancy (catch up after delivery if not already vaccinated)

Chlamydia

Can you get pregnant? Yes — IF treated. Untreated chlamydia is a leading cause of pelvic inflammatory disease and tubal infertility. Once treated, fertility returns to normal in most cases.

Will the baby have chlamydia?

  • Untreated maternal chlamydia at delivery: ~50% risk of newborn conjunctivitis or pneumonia
  • Treated maternal chlamydia: essentially no risk

What pregnancy with chlamydia looks like:

  • Routine chlamydia screening at first prenatal visit (CDC recommended)
  • Re-screening in third trimester for higher-risk patients
  • Treatment: azithromycin 1 g single dose (doxycycline is NOT used in pregnancy)
  • Test-of-cure 3-4 weeks after treatment
  • Repeat screening at delivery in some cases

Syphilis

Can you get pregnant? Yes. Syphilis treated with penicillin restores normal fertility.

Will the baby have syphilis?

  • Untreated maternal syphilis: ~50-80% transmission to baby, with high rates of stillbirth, neonatal death, and lifelong disability for surviving babies
  • Treated maternal syphilis at least 30 days before delivery: ~1% transmission

What pregnancy with syphilis looks like:

  • Routine syphilis screening at first prenatal visit and at 28 weeks (in higher-prevalence areas, and at delivery)
  • Treatment: benzathine penicillin G IM — same as non-pregnant
  • Penicillin desensitization protocol if mother is penicillin-allergic (no good alternatives in pregnancy)
  • Follow-up monitoring throughout pregnancy and at delivery
  • Baby evaluated at birth and at 3, 6, 12 months for any signs of congenital syphilis

Congenital syphilis is at a 30-year high in the US. It is also entirely preventable with appropriate prenatal care. This is the strongest argument for routine prenatal STI screening.

Molluscum

Can you get pregnant? Yes. Molluscum does not affect fertility.

Will the baby have molluscum?

  • Direct mother-to-baby transmission of molluscum is rare and usually occurs after birth through skin contact
  • Genital molluscum at delivery doesn't transmit through the birth canal the way some other STIs do

What pregnancy with molluscum looks like:

  • Most pregnant people with molluscum need no special intervention
  • Avoid cantharidin during pregnancy (limited safety data)
  • Other topical and physical removal options are generally safe
  • Molluscum is usually self-limiting and clears on its own

Gonorrhea

Similar to chlamydia:

  • Untreated: can cause infertility, premature birth, neonatal conjunctivitis
  • Treated: pregnancy and baby are fine
  • Treatment in pregnancy: ceftriaxone IM
  • Routine screening at first prenatal visit

Trichomoniasis

  • Can be associated with preterm birth and low birth weight if untreated
  • Treatment: metronidazole or tinidazole (CDC now considers them safe in pregnancy)
  • Doesn't directly cross to baby

Hepatitis B

  • Vertical transmission is high if mother is HBsAg-positive and untreated
  • Baby gets Hep B vaccine + Hep B immune globulin within 12 hours of birth
  • Mother takes tenofovir in third trimester if viral load is high
  • With proper management, baby is protected

Hepatitis C

  • Vertical transmission rate ~5% without intervention
  • Modern direct-acting antivirals can cure hepatitis C — many providers now recommend treating before pregnancy when possible
  • No specific intervention prevents vertical transmission in pregnancy (yet)
  • Baby tested at 18 months for HCV antibodies

Practical takeaways

  1. Tell your OB at the first prenatal visit. They handle this routinely. The earlier they know, the better the outcomes.
  2. Routine prenatal STI screening exists for a reason — it catches infections you may not know about, especially syphilis and HIV.
  3. Treatment is safe in pregnancy for most STIs, with specific drug-choice considerations (doxycycline avoided, penicillin OK, cefriaxone OK, valacyclovir OK).
  4. Vertical transmission is reducible to very low levels for HIV, syphilis, chlamydia, gonorrhea, herpes — with appropriate management.
  5. Congenital syphilis is the only one of these that is rising in the US and the only one entirely preventable with one round of penicillin. If you're newly pregnant: get screened.

A note about IVF and fertility treatments

For couples where one or both partners have an STI:

  • HIV-positive male, HIV-negative female: Sperm washing followed by IUI/IVF — well-established, very low transmission
  • HIV-positive female: Can conceive naturally with U=U or via fertility treatments
  • Hep C-positive male: Sperm washing, then routine fertility treatment
  • All others: Routine fertility treatment is unaffected

The bottom line

An STI diagnosis does not mean you cannot have children. For HIV, herpes, HPV, chlamydia, syphilis, molluscum, hepatitis B and C, and most other STIs, modern prenatal management makes vertical transmission to the baby very low to essentially zero with appropriate care.

Tell your OB. Get screened early in pregnancy. Get treated as recommended. The baby will almost always be fine.

For more on each STI individually, see our pillar guides: herpes · HIV · HPV · molluscum · chlamydia · syphilis.