Hello – I do know of patients (including me!) who have struggled with weight issues while taking anti-thyroid drugs.
Since yours, though, seems to be primarily water weight, it would be worth mentioning to your doctor to see if there might be another underlying cause.
Here are a few general tips on weight management from a nutritionist who presented at one of our conferences a few years ago:
1. Include breakfast daily within 2 hours of waking up.
2. Don’t go longer than 5 hours in between meals
3. Select “high volume” and “high fiber” foods such as fruits, veggies, and whole grains
4. Limit servings of healthy fats to 1 per day
5. Prioritize at LEAST 7 hours of sleep a night
Once a doctor’s clearance is obtained to engage in activity, she also recommended 150 minutes per week of physical activity, plus strength training 2 times per week.
Hope you can get some relief soon!
EDIT: Also, hpefully, doc is testing T3/T4 in addition to TSH in making dosing decisions for you. TSH can stay suppressed for quite some time and is not a reliable benchmark early in the treatment process.