I was diagnosed last September and put on 50mcg to start which was the increased to 75mcg. A blood test was taken a few weeks later which showed TSH at 3.5 and T4 at 7.4. I said I didn't feel well but was told I was within range and can't be over medicated. After a month of not improving I upped it myself to 100mcg and improved for a few months. But these last weeks I've crashed and burned so got bloods tested again. Receptionist told me results are normal (how does she know!). I asked for my TSH and T4 - they are TSH 1.3 and T4 8.7. Do I need an increase?