Ct shows mild atelectasis right middle lobe and bilateral lower lobes as well as a few 4mm nodules left lower lobe. Should I be seen asap?

No. These findings do not require urgent management. Atelectasis just means small areas of lung do not have enough air in them which can be due to your history of asthma. 4mm nodules are usually benign but require a 12mo follow-up if you have no smoking history or 6mo follow-up if you've ever smoked.