Norethindrone
"So I just went on this pill 2 weeks ago. I've been on previfem until recently when my doctor decided I needed a non estrogen birth control for my migraines. With the old pill I'd get my period for maybe 4 days always the same day around the same time. Since starting this I've had my period for 2 weeks, it won't go away! I was out on the pill originally to control my non stop periods, well obviously it's not working so well. I have awful mood swings and terrible cramps and I'm so bloated I don't even want to eat. My doctor told me to stick it out but I'm going to a new doctor and I'm stopping this medication immediately. It's just not worth feeling like a bloated raging hormonal monster, and it doesn't even regulate my periods."