Hypothyroid - Totally exhausted ? Adrenal fatigue?

I have been suffering with Hypothyroidism for 13 years and Thyroxine does not help. For the last two years I have really been struggling with everyday tasks as I get exhausted very easily. I have been to my doctors and my last TSH result was 150, the usual range should be 3.5 to 10. My doctor will not prescribe T3 or Tertroxin or dessicated thyroid to see if T3 will help. She will not refer me until May to the endocrinologist as she wants to get my TSH lower. I am on 200mcg of Thyroxine and am currently in bed as I have nothing left, my energy levels are non-existent and although I am on Amitryptiline as my doctor says that my depression is causing the symptoms I still feel exhausted. I have telephone my doctors surgery twice this morning to make an appointment to get a second opinion and have been told that there are no appointments until Thursday and I don't know what to do. I have such a brain fog that I struggle to work, get confused very easily, which is frustrating and embarrasing as I was quite intelligent before I developed Hypo. I have thought about changing my doctor but it will take time for the new doctor to get my notes. I have also thought of presenting ay the hospital as I really feel that bad. I got up for work this morning but went back to bed as I did not have the energy to get dressed and had such a headache. Has anyone got any ideas that can help me please, I feell like I want to go to sleep and never wake up which is dreadful as I have a wonderful, supportive partner and two lovely children and great friends. Thank you