bleeding after sex

hey 19 yr old female here…i’m still very new to sex as i just lost my virginity this past spring. i guess you can say i have a reoccurring sexual partner even though we aren’t together. i’ve had sex with this person 3 times and after all 3 times i’ve been bleeding. is this normal? it also hurts at first when they put it in but the pain goes away after a little bit…just wanting to make sure im

ok