help my period is weird

I've had the iud for a year coming up in Oct. It has been great besides this past month which calls for concern .I do have a Gyno visit comin up next month for my annual visit.However thought I'd ask so I can breath a bit easy . I'm std clean too .I wear condoms on the reg but my period has lasted just about this entire month I got it on the1st started very light but now it's like brown and pieces . Almost like Idk how to explain it . Like it's dry and broken into pieces ? Has anybody experienced this . I did the bad thing and I went on web md and it has ferrying explanations .