Thanks for more related info - If consultant hasn't already done so - I would ask for blood test (thyroid function and anything else pertinent to your symptoms.
They might want to do an endoscopic camera look see down your throat/vocal chord area (larynx etc) maybe. I would certainly ask for that.
I take it they are in the process of(or carried out)some sort of biopsy on your ulcer type symptoms.
The stress will certainly affect the way you feel - I can vouch for that from experience!.
A full surgical biopsy is not something they would rush to do - (nhs cost implications!!)
best wishes tony k