I'm 13 Weeks Pregnant And Last Week I Had An

I'm 13 weeks pregnant and last week I had an exam (ob gyn) next day I went swimming (after shaving). All of a sudden I have 3 dark brown/grayish bumps (down there). They are a little sore. Are they skin tags, folliculitis, or an infection? I don't go back to OB-gyn for 3 more weeks. A little concerned and freaked out. Any ideas?