I am on my 3rd month of birth control (desogen), and the first two months i skipped the placebo pills (period pills). I am now on my 5th placebo pill and I still have not gotten my period. Is this normal? There is no chance im pregnant. Also, if i do get my period within the next 2 days am I supposed to wait until my period ends before i start my new pack? PLEASE HELP?~