Stopped birth control had unprotected sex could I be Pregnant

I started my period on june 29 and started taking Yasim birth controls pills on the first day of my period took 10 pills in packet and then stopped on 8th of july had un protected sex and now having breakthrough bleeding from not taking pills. Discontinued taking further pills after the 8th of july is there a possibility I could be pregnant ovulation date is july the 17th. Had unprotected sex on july 9, 10, 12.