I have sharp pain on left side stomach with stomach ache and back side pain. it was 4 days now.

Sharp left sided abd: May be gastritis with or without H pylori- Anatacid may help pain but if H pylori need antibiotics. Avoid motrin like products ,caffeine, spicy foods; or may be constipation -drink fluids eat fiber in avocados, sweet potatoes ,greens, as the splenic flexure of the colon is there. Rarely may be kidney stone , or a lung clots ( worse with breathing )or even just a vaginitis. .F/u/ w/ doc