hi, i'm just starting my first pack as i just gave birth 4 months ago. i currently have my monthly period and as advised, i should take in the first pill on the first day, and so i did. sisses, after my period, how soon can i have intercourse? i'm sorry for the question. i actually forgot to ask my OB-Gyne about that. is the pill already effective as birth control? or is there a period that i have to wait?