I've had the mirena band for about 4months now, and at first I had terrible.cramping an periods that last two weeks every month, except this time, I'm very regular an should have started on the 12th of October, I've had bad cramping an no bleeding at all, I'm very paranoid about being pregnant, I have a 2 year old an a 6month old, both were high risk pregnancys. I've also had an increase in apetite an bad moodswings. Could this just be the iud causing this or could I be pregnant?