My main symptoms are severe tightness in ab area . It feels like my diaphragm is being squeezed so tight, I can't breath. I, m dizzy, fatigued, no appitte. Have been to several GI Docs who all said IBS? Tried several Meds no success, latest was Amitripilene. Went to Mayo in Scottsdale insurance would only let me do a consultation. Had a very savvy doc there and he said in his option my dosage was not high enough. Told me to get to 100 mg at night. Tried that was very hard to do and keep my job, with the side effects. I know this is broad, but what suggestions do you have, thanks