Hello @simc, Welcome to Connect. I'm not a doctor and don't have any experience with Sjogren's. While we wait for others to respond, here is some information related to your question.

"Based on published research, the frequency of respiratory involvement is variable. If you have Sjögren's syndrome and experience cough, swelling, chest pains or shortness of breath, ask your doctor to be evaluated for lung disease or PH."
--- Pulmonary Hypertension - & SJÖGREN'S SYNDROME: https://phassociation.org/wp-content/uploads/2021/04/PHA-Sjogrens-Final.pdf

Can you discuss your symptoms with your doctor to see if this might be causing the chest pain?