3 doctors weighed in:

Are cold sores dangerous during pregnancy? If it's a first outbreak? Never had one but was around someone who does and am worried about catching it.

3 doctors weighed in
Dr. Hunter Handsfield
Internal Medicine - Infectious Disease
2 doctors agree

In brief: No problem

Catching oral herpes (cold sores) isn't risky for pregnancy.
And you are unlikely to be infected just by "being around" someone with oral herpes, only direct contact like kissing. Anyway, half of all adults have oral herpes, mostly without symptoms; this person is no more risk to you than others you don't know about. Anyway, only genital herpes is potentially dangerous in pregnancy, not oral.

In brief: No problem

Catching oral herpes (cold sores) isn't risky for pregnancy.
And you are unlikely to be infected just by "being around" someone with oral herpes, only direct contact like kissing. Anyway, half of all adults have oral herpes, mostly without symptoms; this person is no more risk to you than others you don't know about. Anyway, only genital herpes is potentially dangerous in pregnancy, not oral.
Dr. Hunter Handsfield
Dr. Hunter Handsfield
Thank
2 comments
Dr. Hunter Handsfield
The reply above has been updated -- corrected an error the first time. Please re-read it. I'll also add that the main herpes risk to newborns comes from initial genital herpes, not oral. But a few cases occur from parents with oral herpes during the first month after delivery.
Dr. J. Lawrence Dohan
If your blood test is positive for herpes antibodies the newborn is also immune for a few months. You can have a simple blood test. Many people carry immunity to both type 1 and type 2. Most cold sores are type 1.
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Dr. Dennis Higginbotham
Board Certified, Obstetrics & Gynecology
27 years in practice
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