Boy, can I relate. I got mono in my 30's. Then I started getting every bug in the air. I went to an internist who sent me to an endocronologist. They thought I had a lump on my thyroid. turned out to be some kind of thyroid problem that sounded like Hachimoto. It is caused by a viral infection, like mono. Later that year, I was diagnosed with Fibromyalgia. I strongly suggest that you find a dr who can check you for these problems. I am on meds and life is great most days, with a few days that i feel like crap. But the good out way the bad! Good Luck!