Its nice nice that you have been treated appropriately for thyroid cancer
. I would like to know whether you received any radio-iodine or radiotherapy after your surgery because these treatments can cause some nausea
. If it is not there and since you already had a a cancer it is better you do a endoscopy
to rule out a oesophagus or stomach lesion that may be a precursor for a second cancer.
Dr. Mohammed Ibrahim