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Herpes during pregnancy is managed in person by your OB or midwife, not through an online visit. The reason it gets attention is a rare but serious infection a newborn can catch at delivery. The good news: when your prenatal team knows about it and plans ahead, the large majority of pregnancies with herpes end with a healthy baby. Tell your provider early so they can take it from there.
If you have herpes and you're pregnant, or you're trying to be, the first thing to know is that this is common and very manageable. The second is that it belongs with your in-person prenatal team. Your OB or midwife coordinates herpes care through pregnancy and delivery, and that's by design. This page explains what they're watching for and why, so the conversation feels less alarming when you have it.
What follows is a plain look at why herpes matters in pregnancy, when the risk actually rises, how clinicians lower it, and how to avoid a brand-new infection while you're expecting. None of it replaces your own provider's plan, but it should help you walk in informed.
Why herpes gets extra attention in pregnancy
The concern in pregnancy isn't the usual outbreak. It's a rare condition called neonatal herpes, where a newborn catches the virus, most often by contact with it during a vaginal birth. It's uncommon, but it can be serious for a baby, which is why prenatal teams take it seriously and plan around it.
Here's the part that tends to get lost in the worry: for someone who already had herpes before getting pregnant, the odds of passing it to the baby at delivery are low. Your body has had time to build antibodies, and those cross the placenta and give the baby a measure of protection. That's the situation most pregnant people with herpes are in, and it's a reassuring one. The herpes you've lived with for years is not the high-risk scenario.
When the risk is actually highest
Risk climbs in one specific situation: catching genital herpes for the first time late in pregnancy, especially the third trimester. A brand-new infection that close to delivery doesn't leave the body enough time to make protective antibodies and pass them to the baby, and the virus is often more active in those early weeks of a first infection. That combination is what clinicians work hardest to avoid.
So the picture splits in two:
- Herpes from before pregnancy — the common case, and a low-risk one. Your OB still plans for delivery, but transmission to the baby is uncommon.
- A first-ever infection late in pregnancy — the higher-risk case, and the reason a new outbreak during pregnancy is worth prompt attention rather than waiting.
This is also why a partner's herpes status matters more during pregnancy than it might otherwise. If your symptoms are new and you're not sure whether this is a first infection, that's exactly the kind of thing to raise with your OB quickly. A first outbreak can look different from the recurrences described in our walk-through of herpes symptoms, and it's not something to sort out on your own.
How your OB manages herpes through delivery
The plan is straightforward, and your prenatal team drives it. At a high level, it usually looks like this:
- Tell them you have herpes. The single most useful step is letting your OB or midwife know early, including if a partner has herpes or cold sores. Everything else follows from that.
- A daily antiviral late in pregnancy. Many clinicians prescribe a daily antiviral such as valacyclovir starting around 36 weeks. It lowers the chance of an outbreak and of the virus shedding from the skin right when labor starts.
- A check at the time of labor. When you go into labor, your team looks for active genital sores or the early prodrome symptoms that signal one is coming.
- A cesarean if there are active sores. If genital sores or prodrome are present when labor begins, a C-section is usually recommended to keep the baby from contacting the virus on the way out. With no active sores, a vaginal birth is typically fine.
Antivirals are the same family of medicines used for outbreaks outside pregnancy, covered in our guide to herpes treatment. In pregnancy, though, the dosing, timing, and delivery decisions all sit with your OB, who knows your full history. That's the whole reason this isn't an online-visit condition.
Avoiding a new infection while you're pregnant
Because a first infection late in pregnancy is the risky one, avoiding a new infection is its own goal during these months. If your partner has herpes or gets cold sores and you don't, a few steps lower the odds of catching it now:
- Skip genital contact during a partner's outbreak, and ideally when they feel one starting. The virus spreads most readily then.
- Use condoms, which lower but don't erase the risk, since the virus can shed from skin a condom doesn't cover.
- Avoid receiving oral sex from a partner with an active cold sore, especially in the third trimester. Oral HSV-1 can pass to the genitals this way.
A partner who already takes a daily antiviral lowers shedding too. How herpes moves between people, outbreak or not, is covered in more depth in our piece on how herpes spreads. The throughline for pregnancy is simple: the months around delivery are the time to be a little more careful, and your OB can help you and a partner make a plan.
When to seek care
Loop in your OB or midwife early — tell them you (or a partner) have herpes or cold sores at a prenatal visit, so they can build it into your delivery plan well before your due date.
Reach out promptly if you have what looks like a first-ever or brand-new genital outbreak during pregnancy — new sores, unusual tingling, or genital pain you haven't had before. A first infection, especially later in pregnancy, is the situation that most needs in-person evaluation. And if you notice genital sores or prodrome symptoms near your due date or once labor starts, tell your delivery team right away so they can decide on the safest way to deliver.
If you take nothing else from this page, take this: herpes and pregnancy go together far more often than people realize, and the outcome is usually a healthy baby. The work is in the planning, and that planning happens with your prenatal provider. Bring it up early, be honest about new symptoms, and let your OB do what they do.