help!!!

my period was from the april 30th- may 4th, my boyfriends came in me everyday since the 5th but on may 8th he had my legs in the air while we had sex and he hit something and it hurt the both of us then i started bleeding, could it be implantation bleeding or something else? i also started ovulating today may 10th but i’ve read you can get pregnant the days following up to ovulation, is it too early and im just thinking too much into this??