Hi....
Although there is no cold or cough it could be viral fever...any viral fever takes atleast 2-3 days some times up to 5 days to resolve...so nothing to be worried..if the potty is loose and going more than three times day he may need zinc syrup and probiotics...watch for other symptoms like vomitings and crying while passing urine..
Next Steps
continue paracetamol every 6th hourly
Health Tips
kindly consult nearby pediatrician if fever continues for >3days or child develops any other danger signs like temperature> 102, fastbreathing, any rash,drowsiness...etc