Today was my second time having sex on my period. First time it was okay but painful so we stopped. A few years pass and today I decided to try it again. I laid a towel down and we was going at it. Right before we switch positions my vagina starts making a weird noise and it started getting really tight and painful for him to be in there. I asked him to stop and I been feeling weird ever since. Has this happened to anyone else? Is this common?