I began taking it right after my period and it went smoothly with the only side effect being nausea, when i got to the placebo pills my period started and it seemed rather regular. Same thing the second month but i had spotting for a week after my period, then I'm at the end of the third months pack and I still haven't started my period, is it because it is affecting my hormones or should I be worried. P.S. I haven't missed one so far minus one or two being 15-20 minutes early/late.