Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.F.
Your son is sick since 3 weeks, Feeling chill like sensations and funny stomach, then subsiding after going to toilet. whether did you consult the doctor or not. Regarding child health, on the second day you should consult the doctor.
It appears to be the stomach pain, due to gastrointestinal pain, or urinary tract infection
. I advise you to consult a pediatrician
for diagnosis and treatment.
Defenitly there is infection, so he needs to be treated for that,Besides stomach colic
, it is previous stage of pain.
Wishing him a quick recovery.