For two day now, I have had pain, discomfort on the left side of my rib cage; starts right under my bra line and is about 8 inches wide, and doesn t really go into my back. Heat helps, either from a pain patch, or a heated microwave pad. I ve had 4 Tramdol today, two Bayer Back & Body, and two Gabapentin. For several hours now, there s been no relief. Any idea what it might be.