Crazy indigestion

I’ve had indigestion since Sunday, it’s now about 3:30 am on Tuesday morning and I feel so sick from indigestion I believe. I think I ate something bad on Sunday. I’m unable to sleep because I have pain/burning in the region in the image, so I’ve been sitting up or on my knees. Ive used antacids but no relief. I’ve had a little diarrhea but not toooo bad. Has anyone experienced indigestion like this and been okay?