It's likely that it's just a regular throat infection or an irritant cough due to gastric reflux which also causes chest pain.
Take cough syrup prescribed earlier.
Take tab. PAN-D once daily before breakfast.
Sleep with your head end raised us to prevent reflux and micro-aspiration.
Next Steps
-stay at home in isolation as a preventive measures
-drink plenty of fluids.
Health Tips
if cough increases with high fever of breathing difficulty visit a nearby hospital .