Lately, I've been feeling pain at my stomach, below the rib cage. I don't know if this has something to do with my habit of lifting heavy things right after eating (I fetch water using two pails everyday, an estimation of 20 lifts of those per day) or with any internal problems (my last check up told it looked like I had gastroentritis...). It feels strained. Sometimes, it also goes with painful moments like it digests something. It often happens when I only eat a small amount of food... I've been sent home from school because of this...