I have had a Mirena Coil since June last year. Have had no problems and no bleeding at all since, just a few tiny spots about 3 months apart. However.... Over the last 5 or so days I have been in agony, with what feels like awful period pains, in my back and lower abdomen. It comes and goes, which is why I haven't been to GP yet. Sometimes it is gone for hours, then all of a suden it's back. Suffered with Endometriosis for years, a long time ago pre-DC's, but assumed if anything, the Mirena would keep it at bay. These pains are reminiscent of when I did have it though. Had a root around (TMI alert) and couldn't seem to feel any strings. Is all of this normal?