I have recently been diagnosed with an underactive thyroid and have been on 100 micrograms of levothyroxine for 7 weeks now. But my question is this, my main symptom was nausea and even now I still feel 'yuk' and nauseas. I have looked online to check symptoms of underactive thyroid and I cannot find nausea listed as one of the symptoms. I am worried that there is something else underlying but it is being masked by the recent diagnosis of UT. Please does anyone else have nausea and does anyone have any advice on how I can question my doctor so as to get the right information and help I need. Thank you.