Could Buproprion Cause Nagging Cough Followed By Vomiting?

I have this nagging cough with little phlegm. My cough gets to the point of gagging and then vomiting. It happens when my throat gets really dry from talking or a change in (cold) temperature. I drink lots of water, chew gum. Could my new medication be causing the problem (Buproprion)? I have had a chronic sinus infection but that seems to have cleared up. Please help, I don t want to vomit anymore!