J.D.
obviously....your doctor prescribed your birth control pills for you. I would certainly call into the office for an idea of when. They should be able to tell you more accurately after your next period or Sunday or ......I would certainly want to be sure as to not mess up my period and have the panic and anxiety of possibly being pregnant while taking it or becoming pregnant if started incorrectly.And it could be that the doctor thought he/she already clued you in to when but in fact hadn't.It's only a phone call away and doesn't require an office visit. Good luck and remember...the reason we have them kinds of doctors is for answering any questions as they come up. J.