My boyfriend and I had sex 5 days after my period ended. I am on the birth control pill (Norinyl 1+35) and I take it everyday around the same time. After my period ended I went straight into my new pack as directed. We did use a condom when we had sex and it did not break to my knowledge, but its been about 11 days since we had sex and my boobs are tender and I feel sick to my stomach and today my back started to hurt. Could I be pregnant? I know its probably too early to tell but I've been reading horror stories online of women who have gotten pregnant while on the pill and using condoms. Im waiting for my period to come its due in about a week and a half but the stress is driving me crazy