back when i was 17 my girl got embarrassed cuz she got her period during sex. i'm real bad at comforting & to make her feel better i took one of her clots, put it in my bellybutton, and was like "look i'm on mine too". it didnt make her feel better btw
Also the likelihood of getting your period during sex is incredibly low. You also don’t start your period early from sex. It’s more likely that he injured her.