The ENT doctor said I have a thyroid cyst does this mean that I've imagined my symptoms of underactive thyroid or is the cyst there because my thyroid is failing I dont' know what to think or do now!I had a FNA yesterday and the doctor said that the lump went down so this made her diagnose a thyroid cyst, it did go down slightly after the FNA but now the lump is still there the same size as it was before, I have to go for a scan and the results of the FNA when I get sent an appointment. What do I do now? Should I still be seeing an ENT doctor or ask to be referred elsewhere? My blood results indicated that my TSH has increased since 2010 from 1.7 to 2.0 and my FT4 has decreased from 18.7 to 13.6. Grateful for any advice I still feel wretched with aches & pains, tiredness, hearburn (the ENT doctor prescribed omeprazole for this) shooting pains and numb, swollen fingers in the morning amongst other things.