ummm help ?!?!

i’m on birth control and my boyfriend and i had unprotected sex last month. i have been bleeding CLOTS, heavier than my normal period(lighter because of the birth control)and i’m not supposed to get my period for another week...i might’ve taken a few pills late or missed a couple, but i’ve continued taking them. is it possible that i got pregnant and had a miscarriage because of the pills ???