Zero-negative RA New diagnosis lung nodule

Hi, I am a 60 six-year-old woman with a history of on and off smoking. I am DNA positive for zero negative rheumatoid arthritis that is relentless. It goes into somewhat of a remission during infusions but on a daily basis, it’s annoying at its best. I have been having shortness of breath, which came on very fast and I’d say over a one month period and hoarseness when I talk a lot and I ended up going to the ER at the request of my doctor because my blood pressure was extremely high and my heart rate was very high and they did a chest x-ray because of the shortness of breath and found a lung nodule which they followed up immediately with a CAT scan, which showed a 1.4 cm x 1.0 cm nodule right upper lobe with irregular edges and irregular opacity. Primary care already scheduled follow up ct scan for 3 months and cardiology in 2 weeks. Pulmonary hypertension also showed up on ct scan.
I had a previous chest x-ray eight months ago because of shortness of breath and it was clear as was my chest x-ray the year before was also clear I am wondering if it’s a pulmonary nodule starting the RA lung issues. Any input welcome. Thank you.