need more information. When you say you feel terrible, in what way?
Are you showing signs of LOW, or HIGH (Hyper) symptoms?
I would suggest that your pituitary is not working properly, it is not producing enough TSH, which is telling your thyroid gland to slow hormone prduction. This leaves you very low in the ranges and most likily Hypo (low). Which is why you feel terrible.
This is exactly the reason you need to have more than TSH tested. Because TSH is just not that remiable.
I would recommend you also have tested next time and demand that they also add Free T3 as well as Free T4.
What's the reference range for the T4 and is that Free T4? It should say on the report.
Also, please tell us about the symptoms you have.