Ethinyl estradiol / norgestimate
"Previfem kept me from getting pregnant, so that's great, but it gave me awful, painful, 2+ week long withdrawal bleeds. I would start bleeding right in the middle of my active pills, almost two full weeks before my placebo pills started. The bleeding  didn't really let up until the placebo pills were gone. It wasn't minor bleeding, either; it was heavy and accompanied by cramps/backaches. I would get migraines here and there, too, ranging in severity. I thought these symptoms would let up eventually, but I took it for three months with no luck.



Personally, I just couldn't deal with the excessively long withdrawal bleeds. I switched over to Microgestin Fe 1/20 after three cycles and have had a much better experience so far."