Brief Answer:
Exercise and diet control

Detailed Answer:
Hi,

From what I understand you seem to be suffering with abdominal fullness. Do you also have excessive flatulence and burping?

Since when do you have this problem?
Do you have any other associated symptoms?
Are you taking thyroid supplements every day? How much do you take?
When was your last thyroid function check done?

Chronic abdominal fullness is best manged by dietary change and physical exercise. Making sure you eat food regularly is important. Infact eating small and more frequent meal is preferred. Avoid excessive spices. Restrict beverages, aerated drinks. Restrict alcohol and smoking if any.
Make sure you sleep adequately.

In addition to diet change, you should also consider physical exercise. Weight management is also important.

Acid lowering drug like cap Pan D twice a day for couple of weeks (taken half an hour before food) may help you. You will need further evaluation if symptoms persist despite these changes and medications.

Hope this helps.

Regards

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