My symptoms are vertigo, migraines,blurred vision, vibration in my head. I had the mirena for almost 4 years and in July of this year I started having all theses symptoms in Sept. I had it removed and since then my symptoms are almost all gone except when I am on or about to start my period. I still have a little vibration in my head, I feel it at night when I am laying down. They put me on thyroid medicine and I have been on it for about 2 months. Had a second blood test and my thyroid is at a normal level but my family Dr. is keeping me on the medicine for 6 months and re checking it.Good Luck I hope you will be feeling better!!