@jerrypjr1980, Pulmonology is a good next step. They'll be able to look at the CT to see if the nodules are concerning. Don't be too surprised if they want to wait and rescan in a certain number of months. Many people have nodules that just clear on their own, they are often caused by infections or inflammation. With the recent surgery, you've had some trauma to your body.
Here's some info from Mayo Clinic: https://www.mayoclinic.org/diseases-conditions/lung-cancer/expert-answers/lung-nodules/faq-20058445
I do have lung cancer, and my latest scan showed a new nodule. I had a biopsy from three different sections of the lymph nodes and the nodule, and all were negative for any cancer cells. So even lung cancer patients can have non-cancerous lung nodules. It's definitely scary but be assured that it's not always cancer. Keep us posted. Take care!