I have a sharp stabbing like pain just below my ribs in the front left side of my body. what could this be? i'm 19 and i'm in a lot of pain

Left Upper ABD pain: Causes of left upper abdominal pain include but are not limited to: angina, heart attack, pneumonia, injury, enlarged spleen, ruptured spleen, pancreatitis, infection / abscess of the spleen, renal infection or stone, aortic aneurysm, cancer, shingles and obstipation. It is best to have chronic abdominal pain evaluated. Severe abdominal pain = er.