period. But pregnant?

Hi all this may seem like a dumb question but here’s the situation: So about 3 weeks ago, my boyfriend rubbed his penis on my vagina. he wasn’t hard nor was he inside me, Flash-forward to this past Tuesday, I think it got my period. It was heavy for about 3 days with very intense cramping. and friday had been light with very little pain. Today my period was almost gone with some spotting. my question is: was the spotting that occurred today normal? Also, there is no chance of pregnancy after period correct?