After i have had sex the last 2 times, there are these things on my vagina that get really swollen...in between my labia right above my vagina hole. It's never happened before, it looks like a growth, but then it will go away after a day or so...but they are freaking me out because i've never seen this before. It doesn't look like warts, they don't itch or get irritated. I wasn't sure if maybe it was normal or not??