The pill works fine for me, periods are regular, and painless. Went off the pill last year, as figured i did not need it anymore, and periods were horrible (heavy, painful, vomiting, headaches, cramps), so I went back on. Dr suggests that I go off again, have blood test, and start using Mirena IUD. I have a very busy, stressful, travel-filled job and cannot afford to be down because of a period! what can you advise about the IUD for hormones?