And confusion sets in

My TSH levels pre-op was .64 on the scale of hyperthyroid (under .40) to hypothyroid (over 4.0)... 1 week after my thyroid being removed my TSH was 31.76, they told me to start taking my Synthroid (.075) and a week later (this past Wednesday) my THS is 73.86. However my mood and energy are back to normal, I have gained 14 lbs but that might be stress (I have always been able to put on and lose 10 in days) I am finally getting back into running... I am just confused as to my levels and when/how do I get them straightened out... what do they mean!?