Hi, i have a mirena coil. I've not had a big gap like you have but I remember once, a mirena was fitted and doctor noticed it was broken so took it back out again, she didn't have anymore and said it would be too much to have it fitted same day anyway, so I needed to go back. It was a while ago so I don't remember a great deal (apart from the pain that day
) I don't recall bleeding much as im sure I would have remembered. Can you ring the hospital department that did it and speak to a nurse? These are funny things, sometimes I'd have minor aches/cramps & sometimes quite bad ones after fitting.