How long since you've had a TSH level blood test. This procedure follows fasting for at least 8 hours and should be conducted at least yearly. Additionally, having had some experience with this here in the U.S., the science and guidance for TSH levels is in the process of narrowing... whereas a level of 0.5 to 4.5 (or even 5.0) was thought to be "normal' a lot of Doctors here in the U.S. (the specialty delaing with this, as you probably know are endocrinologists) are now leaning towards 0.3 to 3.0 as "normal.
My Doc also test for T3, T4, Free T3 and Free T4 levels to assure a thorough picture of what's going on.
Sqad has given you good guidance and I for one, wouldn't delay in resuming the little blue pill (at least here in the U.S.) until you've had the TSH blood test...