hi, i was on bcp since july. but havent been takin it on time. last oct 22,i had sex which is the 4th day of my so called period (its withdrawal bleeding right?) . i should have started a new pack again last oct 21st but forgot & took 2pills on the 22nd. we had withdrawal and we did it while taking a shower. ive missed taking pills again on the second week which i took the following day. i just had a home pregnancy test (nov 5) and it says negative. is there a possibility of me being pregnant? i need your expert opinion. thanks!