My daughter (11) has had a severe headache and stomach ache for 14 days now. (she had mild temp and sore throat but not anymore) Has been too sick for school. She is eating and drinking. She wakes up With the pain and goes to bed with it. Has had strep test, CBC, mono spot, And x-ray of sinuses, nothing shows. No over the counter meds are helping at all and Am becoming very concerned. I need help in the next step