IUD PERIOD

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I just had some brownish spotting today after bleeding for the last few days, I tried to reach up and feel for my strings and then more blood starting coming out, I’m not sure why. I don’t think Anything’s wrong up there? Maybe just more blood? It’s day 5. And it’s medium heavyness. It was a week late on the IUD. nothing feels out of place? Do you think that’s normal that more blood came out? Did I loosen it by checking?