Problems on Mirena IUD.

Cookiee • University of Arizona 2022
Hello ladies, I was hoping to get some advice. Okay, I have been on the Mirena for about two years now. I have never had a problem with it until now. I get a extremely light periods every couple months or whenever it feels like it's a good day to pop up lol, and since I'm sexually active that's a little scary. I have also almost completely lost my sex drive, and sometimes my moods are everywhere. I have talked to my OB about it and he said it was almost completely normal. 
It really doesn't feel normal, considering the fact that I have been on the pill for years and never had any like symptoms. 😟 
Any other ladies out there that may have had the same problems and have a little advice for me? Do you think I should switch birth controls?