Stomach bloating, gassy, constipation/diarrhea, random breathlessnes, chest/abdomen pain, breathless when eating or drinking. Doc says anxiety/reflux?

A good Dx idea. It was wise to have a physical exam to check for organ damage. It's good there is nothing bad yet. Treating your anxiety (therapy w/ or w/o drugs) and the reflux is a good idea to prevent organ damage from the excess acid, etc. So, find a CBT therapist you like who can help and it should all be good. You'll learn skills for life!