Dear mehreen! First of all i will condemn what you have done. that is really wrong and you must ask for sorry from Allah for this sin.
As for as concern of your question that you had sex with your boy-friend but does not cause bleeding.
I will say that dont b worry. Occurance of bleeding is not the proof of verginity of a unmarried girl.
Hymn can be raptured due to playing at small age and many other reasons. Todays in the current age, girls are doing many things like males, like cycle and bike riding, running, playing. this all can cause rapture of hymn.
so you should not be worried at all about this. ok.
May Allah guide you to the right path. remember me in your prayers |