Incidental lower lung module found

Hello everyone looking for some help/guidance. I had a lung screening 11/12 everything was normal repeat in 1 yr was the report. On 12/23 I had an abdominal CT for another issues from gastric. This stated incidental finding 3.8mm sublpleural nodule lower right lung. I went to PCP with my scans on a disc for him to review and tell me what to do. He didn’t look at the scans and said I need to go to pulmonary and sent the referral on forward. Pulmonologist office callled and will not schedule me bc the scan they have is if the chest CT and nothing is showing up on it, so she said we can’t schedule for what they are wanting you to be seen about bc it isn’t there. I explained the issue and that I have a scan and report stating nodule. She said that they are likely to want another chest CY before they will schedule me. But my question to everyone here is if the first chest CT didn’t catch which is what I thought they were supposed to do, why would a second? I know that the nodule is fairly small at the moment but everything I’ve read up on didn’t have much good to say about a lower lobe nodule on the right side. I am 45 yrs old for Lee smoker been quit 5 yrs. Which is why I kinda worked up at the moment. Is it possible for it to have not been there during the original chest CT and grew that much in 6 weeks or that it was just missed in the first one? And the second report didn’t even compare to the first and leave any detail of shape, solid or anything. Any help would be greatly appreciated bc I am really stressed at the moment and don’t know what to do. Thank you