I bled...A LOT

I have dated two men and had had my first sex when I was 19 (so if popping cherry is not a myth, it had definitely been popped then).

I had broken up with my last ex about July of last year and haven’t been sexually active since, until recently...

He was very considerate and made sure I was ready, it was great and nothing hurt except the initial insert (for the lack of better words lol).

At the end, he walked into the bathroom and shouted “oh shit, dude, you’re bleeding”.

It wasn’t just spotting. It was a lot of blood. Like, trickling-down-my-legs-like-I-was-on-period amount of blood (I looked after he told me). It seeped through a comforter, bed sheets, the mattress protector and stained the mattress a little bit.

It’s been two days, nothing is hurting, but there is still a little bit of diluted spotting on toilet papers (I’m assuming from the “stretch”?).

Any suggestions or similar experience to share? I’m kind of concerned because I googled it lol and it suggested it might be an STI (the man is sleeping with other ppl too).

Help ya girl out pls 😭♥️