TMI grey discharge?

I’ve had the weirdest discharge since ive gotten my copper iud. I can’t keep up and I got checked and I’m even going back in two weeks because I was checking the strings and it feels very slimy in there and then I look at my finger and it’s this grey stuff so I wiped it off with a Q-TIP to look at the color better.... anyone else experience anything like this? It’s been about 3 months since I’ve gotten my iud. I spotted brown yesterday and you’d think I’d be bleeding today indicating my period but nothing just this sticky grey discharge