<s>[INST] I'm 19, overweight for my 5'1 height and have hypothyroid which I am taking medication for. I was recently in a car accident in May of this year and was diagnosed with PTSD. A lot of anxiety symptoms followed. I have gotten a hold of the symptoms, but mainly it's stomach pain recently. I just wanted to know if that could be caused by bad posture? When I sit, I slouch for long hours, and don't really move a lot. I know that stomach pain is a symptom of anxiety, but I have always wanted to know. [/INST] Many things could cause stomach discomfort. Posture, hernias internal and external, actually the abdominal wall can have hernias (holes in it) but also can have strains. This is the only contribution from posture that I commonly see. Most common, however, upper abd pain is due to mildly abnormal gut motion. Stress associates with it; proton pump inhibitors are very effective for it within days. </s>