I need advice. I'm a bit worried.

Suyapa • Just a cute nerdy lesbian couple trying to conceive a beautiful rainbow baby(or babies) ❤️
Tomorrow makes a month with my IUD. And I thought I started my period  about 10 days ago but it's been a heavy, all day flow for 10 days now. It's extremely abnormal. My period is typically 5 days. Do you guys have an Idea what it could be or what I should do? I have a follow up tomorrow from the day that I got it.