Suggest Treatment For Small Bumps On The Vagina During 33 Weeks Of Pregnancy

I am 33 weeks pregnant since 20 weeks I am noticing bumps, not painful, no pus, no blood, non-wart-like, no vaginal odor, no itching or discomfort of any kind.... I tested negative for hpv and herpes at beginning of pregnancy, and have never had an std. These bumps start small, grow larger over about a 2 week period and then slowly start to go down and disappear after a total of about 4 weeks. Some shorter. I never have more then 3 at a time. They are located on the labia minora, the top part, close to the actual skin of the lips but on the pink part.