My daughter has gone to many doctors and all ignore her gi pain but now she is so light headed and cant function? what do you think it is and what can we do?

She may under a lot of anxiety and stress and should see a therapist. Her describing her symptoms to someone else could help her function more normally.

The brain communicates with the GI system very often. If a gastroenterologist has investigated & found no GI pathology and if you agree that chronic anxiety& stress may be an issue, I also recommend consulting a mental health professional for stress management therapy which I feel would be quite helpful. Her physician can make the referral.