1st month of restarting birth control, 3 days before placebo pills, light colored bleeding with about medium flow for 2 days breakthrough or abnormal?

2-3 mos to regulate. Yes, this can be quite normal. As your body adjusts to hormones being introduced, be patient. It may take 2-3 mos for your menstrual cycle to get in sync with the pills. If your period is still irregular at that point, you may want to talk to your provider about trying a different type of oral contraception.