What Causes Shortness Of Breath And Chest Pain After Tonsils Surgery?

Hi doctor, I had got my tonsils removed on 04/02/2014. Ofter 6 months, i have been having short of breathing and stiffness, pain in chest especially when i breath polluted air or dust. I recently got my xray showing no problem and iam having cough aswel now but not before got my xray. Are these because of a pus kind of liquid dripping into my throat because i have this problem since 5 years.but all these problems were not there even if i had my tonsils large because of postnasal dripping?.or Do you say that its because i don t have tonsils which makes air heat to go into lungs? And i have bad breath aswel since 5 years and since 5 years i went to many hospitals such as yashodha Secunderabad where my tonsils had been removed and appollo, etc but every doctor said you have no sinusitis.