Can constipation cause pain.? Cnstnt pain fr months in lower left side of abdomen. Doc says it's due to constipation. Sonogrphy reports are normal.!

Yes. Even moderate constipation can be painful. Drink sufficient (clean, healthy) water. That would be at least 6-8 8oz glasses a day. Also, try to include fruits/veggies in diet and some olive oil can help. Never put off for later an impulse to have a bowel movement. At an urge - go to the toilet. Best!