Heavy vaginal bleeding after intercourse

Me and my boyfriend were trying for sex for so many time on one day when he was trying i asked him to stop bcz it was very painful another time it doesn't fully penetrated but there was some bleeding but it gone after some time i thought my hymen was broken but on 15 sep when it got fully penetrated i feel something liquid just passed out and it was blood and it doesn't stop for hours i was admitted to hospital i explain everything to the doctor there was clotting in period so she asked me have you taken any medicine so i told her it was a year ago i take medicine but in confusion and fear and there was not even any penetration now i came back to home due to blood loss am so weak please tell does it happens every time i indulge in sex bcz it is my first time it's like a nightmare i don't want to have sex in my whole life am so scared and i have pcod also so in future if i ever have sex does it happen with me is it something serious? how i overcome this fear?? please please help