I started my birth control pill before my period and my period never came..did the hormones screw up my cycle?

Planned Parenthood said I didn't call for to lurk for my spell to start...of late enjoy another method of contaception for a week. Will I probably go and get it surrounded by my week of placebo pills? I'm a first time user.
Answers:

Period durable for a month?

Yes, it'll probably come during the week of white pills. I've other read that you should use protection during your first cycle of pills to be sure. Good luck.