Well you didn't really say you were taking birth control pills, why did you take medicine to delay your periods? 5 tables? Also, if your having sex your not a virgin anymore... Anyway, if you had unprotected sex and your not on birth control, there is a chance it could have gotten you pregnant - just take a hpt with fmu and maybe see a doctor
you could possibly be pregnant but usually the first month of taking bc pills you will be late one week. I'd say wait another week and then test