I recently have been experiencing vaginal bleeding during sex. It started with my ex-boyfriend, he was not big at all so I dont think thats the problem.. With him it actually hurt a lot. I am still experiencing the same problem with my new partner except this time it does not hurt.I went to the obgyn and they gave me a pap smear and checked for std's and infections.. Everything came back negative.. They said they noticed a cut on my vagina..They said it happend because I was dry.. The thing is I'm hardly ever dry..So I closely watched the cut because they told me not to have sex until it was healed..When it finally healed I had sex and it happened again in the same exact spot..I waited like two weeks..If somebody can help me I would greatly appreciate it.

If it is only the day after your period finishes, then probably that is just the period. Any other time, unexplained or irregular bleeding needs medical assessment.