i have a multiload iud fitted following a termination in december 2007, i`ve had some heavy periods while using it over the years but today i have had a particularly nasty time, when i used the toilet earlier and removed a tampon it was followed by a large blood clot, maybe 2inch wide and very thick, is it possible that i could have miscarried? I am a 29 year old woman who has had 3 children. 5ft 3 tall approx 11 stone.