Hi Ihave endo and ademyosis (sp?) and had the mirena coil fitted 26th May. No bleeding, only spotting, back aches disapeared a week ago. Feeling good, have u checked that it is still in. You should be able to feel the cat gut string things at the cervix. If not sure I would get it checked. U could try evening primrose 1000mg, that might ease the pains.Good luck