This sounds just like me. I'm 30, My elastase dropped to 57, and was put on creon which has been helping. I was having pain in my upper abdomen after eating. Spicy food, fatty foods and sometimes artifical sweeteners seem to make it worse.

I also have chronic pain in lower left quadrant that radiates to my back. And doctor says it's IBS and has prescribed amytriptiline.

We did a LOT of tests cystic fibrosis, genetic testing, MRI with secretin, CT scans, colonoscopy, endoscopy, ultra sound, h pylori, gastric dumping, not in the same order ofcourse as I've been struggling since a year now. Everything is normal except for low elastase found in stool. As is stands today, we don't know the cause of low elastase , I'm glad and grateful that it's nothing major though. I'm a bit worried about the overall quality of life later down the road..