I have been taking Minastrin 24 Fe for 7 months and had no real problems (normally no bleeding during menstrual cycle, sometimes a tiny bit, no real cramping). Last month I had a terrible period, heavy (for me, which I suppose would be a normal period for others), lots of cramps, headaches, moodswings, plus it went for about 8 full days. At the time I was on a steroid for headaches (6-day course of Methylprednisolone), so I thought that was the reason. However, this month my period is once again heavy and lots of cramps and headaches and acne. Could this be lingering effects of the steroid? Or should I be concerned about the efficacy of my Minastrin?