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What should I do about this sever upper left abdominal pain? - left abdominal pain more condition_symptoms

I have a sharp pain in the left upper abdomen and was again last week, and I know that his constipation, but do not know what could be. The pain is so bad that I am literally immersed in a sphere of mourning. I do not know if it's serious or not, or what might be, but certainly not normal. Please help me.