So I just started BC 3 weeks ago. I finished the 21 pill pack yesterday. My period started immediately (like 5 hours after I was supposed to take the pill). I got on the pill because I went through a 27 day period which got really bad (me going through 3 tampons in 30 minutes) kind of bad.) My periods were not bad before then. I would occasionally get the slightest bit of nausea and no cramps. Today I’ve had the worst cramps and my nausea is terrible. I thought BC was supposed to help with periods? What’s wrong with me?