I am a girl of 18. Last year I had sex for the first time and everything went normally - in the beginning there was pain, then blood, penetration became quite difficult. Anyway, all normal things. I have had a friend for some time, we have had sex three times already, after the first and third, there was bleeding again. I feel quite strong pain at the beginning every time I penetrate, the last time it came in quite difficult. My question is, has it happened to anyone, and is there anything to worry about? I expected the pain to go away and this bleeding didn't seem normal to me either.