Had unprotected sex with my bf 3 days before my period, we had sex 3 days in a row and the next day my period startd but it was spotting and that day wehad unprotected sex again and the followibg day they looked normal but this time they wereheavy and theylasted for 3 days instead of my normal days which is 5 days and we had unprotected sex again 4 days after that periods, could I be pregnant?