February of this year I was diagnosed with underactive thyroid, TSH 7.11 and T4 10.8. I was put on 100 mcg levothyroxine. Second blood test done in April TSH 0.16 and T4 19.9. My Dr kept me on same dose of Levothyroxine. I have still not been feeling well. Asked for my dose to be lowered and had to have another blood test done (two weeks ago). My reading now TSH 0.05 and T4. 22.0. Doctor has reduced Levi to 75 mcg. But what is happening, does this mean I am going from being underactive thyroid to overactive thyroid. I feel so confused.