Cough 4 month old. Said. please help.

For my cough, I first took Clavam 625 three times daily for 5 days, but it did not improve. Then I took Levocetirizine 5 mg for 10 days, which improved it by about 80%. After that, I took Ebastine 20 mg and Montair 10 mg once daily for 10 days, and it improved about 90%. Still, I occasionally feel throat irritation/itching after eating or running, mainly in the lower throat/upper chest area. My doctor then prescribed Foracort 200 Synchrobreath twice daily for 15 days. It has been 9 days so far, and the irritation is still present occasionally, though I am about 95% better. Sometimes deep breathing triggers the irritation. Sometime I do not even feel like I have a cough. Chest X-ray is normal and Truenaat is normal.no cough is present while coughing.. after taking foracort sometime little cough comes out.. but i want clear throat . Please help... What can i do.. no chest heavyness nothing .. only cough.. dry cough ent doctor said.. please help..