please anyone tell me what you think. very serious

about a little over a week ago me and the guy I talk to had sex but his penis is really wide and it's been s while since I had sex. i was on top and we were both kind of forcing me on his penis and as I'm going further down on it, my vagina starts hurting like as if something is ripping but then he got on top and we just finished. and the next day I got my period and my vagina was sore from that day throughout my whole period but I didn't think much of it because of how the sex went but before my period ended, I noticed like 2 cuts by the opening of my vagina and now it's like 1 sore by the opening of the vagina. it doesn't bother me unless it's touched the wrong way.. I'm thinking because of the sex and the rip and me being on my period right after and always having a pad on with that bacteria and moisture the rip wasn't able to fully heal.... anyone please help