Thank you for your query on Healthcare Magic.
Any loose motions are there?
Any history of cold, cough, or change in voice?
Any crying history during passing urine?
This will guide to know the focus of any infection.
And very loud frequent farting may be an early symptom of any gastrointestinal infection
you can give a paracetamol
syrup in prescribed dose.
And consult your Pediatrician
for the examination of the child and for treatment.
Hope I have answered your query.