I am so sorry to read of your troubles. I had your some but not all of your symptoms and I went to three MDs too….and I was prescribed anti-depressants by the first MD, sleep meds by the second MD, and the third MD said he didn’t like how my thyroid felt (along with exhaustion which was not like me back then) and he had blood taken. My blood work showed I had Hashimoto’s Thyroiditis which I believe is an auto-immune disease. I was prescribed Levothyroxine (“fake thyroid RX) and I felt a little better. Next MD appointment, after reading more about Hashimoto’s Thyroiditis online, I asked him about “natural thyroid RX” which was called back then (1990) Armour Thyroid RX (please read and research on Mayo Clinic’s main website or Merck’s Manual). I switched to Armour Thyroid (which I was told was from female pigs). The “Natural” Armour Thyroid did not work well with my body and I was having weird new symptoms so I went back to Levothyroxine and he increased my daily dosage which helped enormously. Please please do your own research online with Google and also try Mayo Clinic’s Symptom Checker on their main website as I have found that tool quite helpful. I have had two girlfriends who were diagnosed with Hashimoto’s Thyroiditis within two years of my own diagnosis. They both took different paths….one totally natural and the other doing the synthetic hormone that I take daily. They said their MDs said you need to have blood work that checks both T3 and T4 every time and not just one or the other. Please forgive me for not researching everything before writing to you but I had just this 10-15 minute time to write back to your post before I must go to sleep. I sure hope you research more online before seeing your MD or a new MD for your thyroid. I am alarmed your thyroid is three times its normal size (but I am not a MD or RN) but I do remember reading about goiters which I believe is when your thyroid doubles or triples in size. Do not ever give up!! You can find answers, treatment and relief….HOPE. I will be pulling for you!
Perhaps by chance you have Mononucleosis. I was diagnosed with Infectious Mononucleosis at the age of 30 years old and your stated symptoms just reminded me of how debilitated I was from developing mononucleosis at an older age than most people.