I am hoping to get some info.

I posted a couple of years ago that I was slightly hypothyroid. I went on 50mcg thyroxine and all was good. However, late last November, I had my levels tested and they were terrible :/

My TSH went from 3.3 (in April) to 18.1 My T3 and T4 both fell to well below range. My cholesterol and triglycerides also shot up (a side effect of hypothyroidism apparently ). My hair was falling out and I was exhausted.

Anyway, My GP upped my thyroxine dose to 75mcg and I went to an endocrinologist for further investigation. I had blood taken last week. Good news is pretty much everything is 'normal' again....TSH, t4, t3, trigs, cholesterol. I also came back negative for thyroid antibodies (so I guess I don't have Hashimotos).

What confuses me is why my thyroid is acting up so badly if I don't have Hashimotos?

What is causing it?????