THIS JUST CAME OF ME

I’ve had the Mirena for 6 months now and my periods have gone from 8 days to 12+ days and my anemia has gotten worse and I’m so depressed but I’m too scared of the pain to get it out so 🤷🏼‍♀️ but that’s besides the point rn. I get weird cramping a lot but lately it’s been worse than usual and it’s been accompanied by weird spotting and second periods so I went to my gyno last week and she did and ultrasound and everything and there’s nothing wrong with the placement and there are no infections. I went to check my strings in the shower just now and this weird gloppy stuff comes out of me, this used to happen at the beginning but it hasn’t happened lately and there usually isn’t black stuff in it so yah wtf is wrong w me lmk thanks bc I don’t think this is normal