This happens to me almost everyday since more than 3 years now. After sleeping 4 hours, I will wake up and will not be able to go back to sleep and gradually my heart rate and oxygen will fall as you can see! Of course this will make me short of breath and exhausted to go to my work. Most symptoms will improve starting afternoon except the oxygen will not even reach 97-98 level. At night I go to sleep normal.
I got some improvement from Levothyroxine but still experience this issue. My doctor thinks I have secondary hypothyroid due to suppressed TSH from pituitary!
I have seen so many doctors non of them helped me! I hope some can advise me, at least what tests should I ask the doctors for?