I've had nodules off and on for a long time. One doctor told me they call any unusual lump, mass, etc. that shows up on a ct scan a nodule.
My first bronchoscopy was in 2011 shortly after I was diagnosed with chronic bronchitis and bronchiectasis. It was horrible. The scope was inserted through my nose and I think I may have been awake for the whole thing. The purpose was a "lavage" which is a saline wash to obtain mucus. I don't know why we needed this to obtain mucus because the main reason the diseases were found was because of excess mucus.
There was no bacteria in the lavage result or in the sample I brought in a year later.
Over the years, nodules which appeared in my lungs from time to time were followed with ct scans but my pulmonologist did not do regular sputum sampling. In November 2018, my new pulmonologist had me bring in a sputum sample and I tested positive for MAC. I began treatment in March. I brought in monthly sputum samples and the June sample showed a fungus along with other new bacteria. A nodule in the upper right lobe was suspicious for the fungus. (Btw I learned in August that no MAC had grown from the June sample).
Sorry for the length but we're finally at my second bronchoscopy which I had on July 1, 2019. This time, the scope went through my mouth ane I was given the same drugs as for a colonoscopy. I slept through the whole thing. I was intubated and the scope went through the intubation tube. Five biopsies and a lavage were done while I snoozed.
I think because you are having the bronchoscppy to look at your nodules, your dr is planning on doing biopsies and you will sleep through the procedure.
I hope you have good results.