Every time I cough I feel sharp pain in my left lung near splendid or stomach. What should I do? I suffered from cough for over 5months on and off, consulted doctor over calls and they said that I have allergy. After diet restrictions and avoiding dust my cough was fine but from few days im experiencing the same but cough is not as severe as it was earlier. Trying my best to avoid dust and food items which aggravated my cough earlier.