M.T.
Hi M.,
My heart goes out to you and your son. I can imagine how you feel and hurt for him.
I would suggest asking your doctor for a referral to a gastroentorologist ( don't know if I spelled that right). It may be nothing and at least then you will have the piece of mind that a specialist has checked him. I would make sure they did a MRI or ultrasound to see what is there instead of just a physical exam.
Go with your instincts mom...