ok...here goes
I want to start by saying that you know your body better than anyone and if you think the tests are important then have them. All of the symptoms that you are describing are ones that many of us on this forum have experienced and are still experiencing even post mirena. I am almost 2 months post Mirena and while I can tell a huge difference in how a feel since having it removed.....alot of days I still live in a fog and cannot hardly pull myself out of bed to do anything and have to take 2 hour naps on a daily basis. I never did this before. I can have a great morning and an awful afternoon...symptoms seem to come on so suddenly!! I really don't know what to tell you...I think you just have to listen to your body.....but you are not alone, alot of us have recurring symptoms that we cannot explain. We can only hope that it gets better with time. Good Luck!