Weird piece of flesh come out

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hi ladies, i've had the mirena coil since january and periods have been weird since. in the beginning i was passing clots and fleshy looking things but this seemed to go away. recently i had my period, it went away for a week and then came back fully for 4 days. since then i've had spotting and today this came out. no chance i could be pregnant, what is it?!

I think its just uterine tissue