Now on my 3rd pack of yaz, I bled when taking the inactive pill on the 2nd pack, and then it stopped. I had unprotected sex 2 days before i finished this 2nd pack. My fiance did ejaculate in me. What are the chances of pregnancy? I assummed my period would come on the day I take my next pill from the new pack but it hasnt. My ob/gyn put me on the pill as I experienced irregular periods.