HELP!!

i have irregular periods and haven't had one for about two months. my boyfriend and i are sure i'm pregnant but i started bleeding a few days after the sex. but i also had a pap smear done the day before the bleeding started. is it normal to bleed when you first become pregnant? it's been heavy bleeding but it's starting to slow down and stop. sos! i need advice pls :'( ( i have already taken a urine test at the hospital and a blood test but it was too early to tell!)