my baby just completed 3 month he has cough .we have used sporidex 125ml for five days he recovered from coughing but still the dry cough exit with very small frequency. Please help

A. hi dear Call your doctor if your baby has: Any cough, and she's younger than 4 months. A dry cough related to a cold (a runny nose but no fever) that lasts more than five to seven days. A dry or wet cough with a cold and a fever of 100 degrees or more.