For two months now I've been suffering with similar symptoms to what others here are having.
Started as a dull "ache" in my lower left ribcage. Then became a sort of "cramping" sensation. Dr said it was likely musculo-skeletal, and to take Aleve. This sensation would come and go. Aleve didn't do a damn thing, I switched to ibuprofen.
Week later I started having back pain. Called the Dr, she was on vacation. The Dr that was taking her calls saw me, said I had prostatitis, tossed me on antibiotics.
Didn't help my back pain at all. Though my prostate (which was inflamed) seems to be doing better.
Yesterday I woke up very early with burning under my ribcage. No longer cramping sensation, this actually HURTS.
I so hope this is something simple, and not what I suspect may be a problem with my pancreas.