Re: Thyroid cancer
What is your tsh? What are your blood levels? What was your thyroglobulin levels? Are they required to tell you these things in your country? This is how your medication should be adjusted based upon those things, as well as your blood pressure, etc.
Here in the US, we can go to special hospitals such as one that specializes in cancer, to get better care as well as education on these things. Here in the us we use synthroid or tirosent, and a high dose of synthroid would be let's say 275--300 MCG (not uncommon if someone were a large male I suppose) as opposed to MGs, so I have no idea what your type of dose means. If you were on 225 mcg that would be a normal dose for a male, if it were 225mg---I would assume that would be an extremely high dose? If it's mcg, you could increase.
You don't seem very heavy to me, but you want to make sure it isn't water weight, which is more of a sign of under-medication. I think knowing your blood levels could help you better understand what's going on.