Nearly three weeks ago I developed a bad stomachache almost like indigestion after anything I ate or drank (possibly caused by bad sushi from publix, though its doubtful since it was bad enough to spit out and I hardly ate any of it. Though I had very runny but brief diarrhea the following day after I ate it).

The pain has persisted for the three weeks. I am healthy and get a good amount of exercise. I eat slow and chew my food well. I recently quit smoking and drinking(a couple months ago). But, stupidly, I had been experimenting different substances like opium tea, derived from dried pods, kratom gel caps as well as kanna powder. I experienced a tightness in my stomach mainly after the opium use, but it was nothing as painful as it is now.

I discontinued use of any substance once the pains started.

I'm scared because I know I couldn't live with this chronic pain and inability to eat in peace. Please help me.