SEE YOUR DOCTOR AS SOON AS POSSIBLE.
You may have pneumonia, heart trouble causing your shortness of breath (heart attacks during viral URI's are common), or it could be reactive airway disease (a milder form of asthma) that may be causing it.
If it's RAD, then some albuterol will definitely help you.
I'm not sure how old you are, but if you're >30 you definitely need to be screened for an MI (heart attack) or CHF. CHF from myocarditis can occur and can have deadly consequences if not promptly addressed. It is usually caused by a virus, hence the reason why you should be evaluated.
Bronchitis should never make you short of breath!