First about SGOT/ SGPT levels, the increase is significant if its more than 2 to 3 times the normal values.
So you need not worry.
Minor increases may be due to medications.
can be increased in pubertal age group when there is rapid growth of bones.
And any lab values have to be correlated with symptoms and examination findings.
Regarding his fever, if your son`s activity and food intake are normal, it can just be a virus and he will be okay.
But if his activity and food intake are poor, he needs to be evaluated further. In such a case he needs to be reassessed to find the focus of infection. Record the temperature every 6 hrs, this will help your doctor in assessment. Was his urine tested? What was the CRP, ESR?
Please feel free to get back with reports.
Regarding the indigestion
, is it related to any specific food intake? Discuss this with your doctor and rule out gastritis- which may be due to improper meal timings, skipping meals, spicy food, excess tea/coffee, stress
Hope my answer helps you.
Wish a speedy recovery for your son.