Problems with women's

Olivia
On 18th of October I had my period which it was only for three days like which my period it only for five days like and last night I had sex with my partner when I went to the toilet wiped me self with a tissue I saw blood on it, which I think he ripped me inside that's what I believe because when I go to the toilet it a bit sore like and other which I believe it mine period it looks like it because it heavy bleeding from last night like and I don't know what to believe now because I know that women's can't bleed twice in a month so can someone tell me what's going on like please