what type of doctor do i take my 14 yr old that has severe stomach pains for two weeks plus and all tests keep coming back normal? All blood work, CT Scan, ultrasound, brain MRI, colonoscopy and endoscopy all cam back normal. My daughter is in sever pain in the lower left quardren of her stomach. Even the GYN rule out gyn issues. I am lost...and want help finding a doctor that can help us. Any suggestions?