Hello and welcome!
I am sorry to hear of your confusing symptoms and recent experiences, which naturally have you looking for answers!
Definitely follow through with your gastro and the tests she wants you to have...
...but also seek to treat anxiety through stress management techniques...because you could have a co-morbid situation...
...and treating the physical and mental simultaneously will cast a wide net, in order for you to feel your best possible.
See our Resources at the top of the main forum page here for great self help material. Practicing the suggested exercises daily will make a big difference in how you feel.
Keep posting with us as well if you find it helpful. We understand, care and are here to support!
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT