Physicain symptoms and conditions

Hi, I am on the mirena and I have been on ther for almost 2years. At first everything was fine. I don't have a cycle but that didn't bother me cause all the BC I've been on is like that. But know no sleep it's like I sleep but I am not sleep. I have to take Tylenol PM. My sex drive is horrible I can't even get into it or can't get wet either. And especially the weight gain that I experience I'm a person that hardly ever gain weight. I talk with my physician and said that it could be my thyroids I went through all the test everything seems to be fine. I was also thinking about going to a urology doctor.I scared to get the mirena out I have 2 kids and been with my significant other for 9 years. I want to get off but I don't know what else to get on. I have been on everything you can think of and I am not trying to have anymore kids. THIS IS HORRIBLE I MA TO YOUNG FOR THIS