I'm on birth control as well, but just for extra precaution I took plan b. I took it on the last day of my active pills in my pack. My period came two days late, but I had bad cramps, a little bloating, fatigue and moodiness. I started my active pills and also got my period yesterday and It was dark and heavy. I filled up a pad so I know it wasn't just spotting, but today it is like I am on my last day. It is really light. Is this normal? or is it side effects from taking all the extra hormones?