Am going through a difficult time now as althogh taking medication for my underactive thyroid still keep being ill, and the symptoms keep shifting and changing. A few weeks ago I told my doctor that I am having days where I have frequent urination, headaches, a bad cough etc.
And as always they either want to see if it is diabetes or something totally different or ignore it.
Frequent urination can be caused by the adrenal glands being worn or anaemia, both of which are commonly paired with underactive thyroid! But it would be too sensible for them to think of that. Even when I point it out they do not listen. And I am not allowed to go to see a specialist.
Please do not respond if it is to say change your doctor or some other thing which is changing the subject. Believe me, if that was practical I would have done it years ago.