The feeling of a lump in the throat or a constricted feeling is a frequent feeling we get with anxiety in my opinion. I know you have seen your GP, but have you also been going to see counselor about your anxiety as well?
Hi there
I do get the occasional post nasal drip but it has never resulted in this. I have heard that this "constricted throat" thing can be an anxiety symptom.
Do you have allergies? Could be leakage from the sinuses -- the famous post nasal drip -- that's become too noticeable to you.