PLS HELP ME ANSWER THIS!!

hi everyone my bf and I had sex the last day of my period keep in mind on my last day I don’t bleed but I wear a pad incase.. while we was doing it I stopped and look at the bed because I was feeling off and there was blood. now my 1 week cycle is beginning AGAIN when it literally already ended now I’m on my period for 2 weeks straight now and the cramps are horrible! so what I’m asking is could I possible be pregnant?? is that normal?? pls someone explain.. I’m worried.