Pregnant?

Patient: I have an important question. ok soon last monday i had sex. i have been on birth control for a year and i was on the 3rd week into the pill. so after i had sex i misseed it for 4 days then but then i got my period like on thursday. it was brown n chunky so if i was pregnant then that old blood would come out but then the next day it was red and heavy. then i was spotting a light pink. n i was suppose to get my period this week on tuesday and i havent been bleeding and i have bad cramps. Now could i be pregnant even if i was bleeding?

Doctor: