So yesterday night i had sex & when we were doing it , i kept getting this cramp feeling in lower tummy ... i thought i started my period , i checked their was nothing there . lately that morning i checked and im bleeding , its not like a normal period my vagina hole and around my lips itch very much.. we both got checked yesterday and we don't have anything.. the bleeding isn't heavy or light .. its moderate , hurts to wear tampons .. the bleeding came from light pink to bright red. inside my vagina its itchy .. help???