Good day

I have been on Euthyrox 100ug tues/thurs/sat
And 150ug other days for about 2-3years I'm with an endocrinologist but he is very busy as his head of this department at a hospital so is not always available for appointments at his rooms. I am going for another blood test to check my Levels again ... my hair has been very dry lately and I am very edgy and irritated for no reason. I feel as though my thyroid problem has been a constant problem. I'm always tired, exercise regularly at the gym I've lost weight about 10kg wth exercising everyday 3 x a week wth a personal trainer which is costly but now it's piling back on even though I'm still exercising and my sugar cravings are very prominent and hard to control...could the Euthyrox be adding to this constant up and down weight problem? If I don't exercise and eat even a little bit of sweetness or carbs my weight escalates immediately?

Thank you