Had salbutamol tx to stop contractions at 25 weeks of pregnancy. Wheezing after discharge home. Under a fan a lot d/t weather. Should I be worried?

Wheezing. Could be asthma, see your md to make sure it is not asthma attack.
No, don't worry. The salbutamol would actually decrease wheezing if you had any tendency to asthma. Premature labor, although common enough, is very hard to diagnose. Many women have early contractions due to dehydration or bladder irritation and are not truly in preterm labor. It is always best to get checked though , if you are having frequent cramping.