Had mirena fitted in nov in the hope it would help with my ridiculous periods. When fitting dr told me I had the biggest uterus she had ever seen (helpful). Anyway bled for about 4 weeks and things settled down a bit. Periods went on for 10 days instead of the 3 but no flooding. Finished period on monday. On tuesday went to loo at work and passed a fist sized clot presumably with the coil. Then bled through a towel to the point blood was running down my legs in 5 mins. Last night passed a clot bigger than my fist-still bleeding like a trooper. Certain coil has gone but what the hell do I do next?