I don't know if what your daughter is experiencing is "growing pains" because of the different things involved. It could be that there are couple of different reasons. My daughter from time to time experiences leg pain. She says it hurts inside, the doctor told us those were "growing pains". The stomach ache and gas could be something she is eating or stress same as the headaches or the need for glasses. Good luck hope you find out soemthing soon.