Could I be pregnant or is it just PMS?

if theres no sperm in pre *** how come people get pregnant from the withdrawal method than. and just because he peed after sex and cleaned his penis whats that gonna do. sperm dies after being outside the vagina. and if he cleaned it, there would have been no *** on it. btw you would also no that if he didnt *** in you that you wouldnt be pregnant if u believe that pre *** does not contain sperm. if u were sensible and everything than u would no theres a possibility u could be pregnant from the pre *** but if ur period is a day late than i doubt u are thats normal