I use a nebulizer with my albuteral and now i. Have a cough what can I do for it?

Call your doc. O/c cough meds may help a cough caused by drainage, but if it is from something else and the albuterol is not helping, you need to see your doc.
Asthma? Assuming you have asthma and that is the reason for the albuterol, the cough may be another manifestation of bronchospasm/inflammation and you may need to add a steroid inhaler to your regimen. See your doctor to be sure and to prescribe the inhaler. Also, be sure you are cleaning your nebulizer and its supplies after each treatment to avoid infection from this source.