Right well im worried and i dont know where to ask this. I dont feel like asking my parentals as i dont want to get to embarrased.

Me and my gf had been having sexual intercourse (vaginal) for the past 2 weeks.. over the last couple of days i have been round her house and we were activly doing things. Last night i had sex with her and we stopped for a break i then tried again but she said she was in pain, a sharp like sore pain. She asked if i could go slowly. We tried for about 10 minutes slowly but it got to painful for her so we stoped .

In the morning she is fine no pain nothing. I came home and masturbated and after this i noticed that my top part of my penis was sore. I had really little bumps on my head and under the head i have like 2 little red rashes.

I think that maybe becuase we had sex to much over the past days she wasnt lubricated enough or something along those lines becuase sometimes it was uncomfortable doing it. Do i have some kind of STD ? or is it just "friction" pain ??

Help me out im very worried :S.

Thanks for your help.