I have pain in my left mid-back, near bottom of rib cage, left side.  Piercing, stabbing pain, feels likes its boring a hole through.  Burping, foul stool, bad taste in mouth.  This is third day.  Tried ice, advil.  The only thing that feels good is making a fist and pressing it real hard against the area.  No appetite.  What is this?
Hello dear, welcome to Chat Doctor.come have evaluated your query thoroughly.* There are different causes as - acute gastritis , duodenitis - ulcer stomach or duodenum - infection of intestine - pancreas disorders - other reasons.* Needs proper clinical evaluation with basic lab tests, ultrasound of abdomen & pelvis for further management. Hope this will help you for sure. Regards dear take care.