Thanks for contacting ATD for an opinion here.
If you are 31 weeks pregnant and you have been seeing red bumps over your vaginal vestibule which are in confluence then they could possibly be herpes genitalis infection. This can be ruled out after a local examination by a Physician and a swab culture which can isolate the organism and can confirm the diagnosis. Please visit your Physician for an exam.
I hope this helps you.
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