I had been having sharp, stabbing pains in my right lung area under my breast bone on an off for a few months. It was so intense, it actually took my breath away and I’d have to speak in small, quick sentences until I could catch my breath again. My rheumatologist thought it might be pleurisy, which is where your lung lining is inflamed and rubs against your chest walls. Of course, every time I would get an appointment and go in to see him with this pain, it was never acting up so he advised that next time it happened, to go to the Urgent Care or ER to be looked at immediately and they could do an X-ray and see what exactly was going on.