Hi Kate,
Please do not worry although I know it is easier said then done.
This is a classic symptom of anxiety.
I have it now still on occasion and had it for many years.
My symptoms tend to rotate in that I will have the globus hystericus ( hysterical globe) for a while and then heart thingys such as skipped beats and so on.
I know a speech pathologist who said it is all related to stress and anxiety.
My ENT doctor said the same.
So many people have this, Kate, so please take some consolation in that.
It will pass, so try to be patient and above all do not give it more power then it is due.
Merry Christmas from across the pond.
Hugs,
Soup
" I have developed a new philosophy.....I only dread one day at a time." Charlie Brown