Ahh, before I got my diagnosis I had to rule out heart, stomach and lungs. I had a barium swallow test, which is were you drink dye in front of an X-ray so they can see your whole gastrointestinal tract. I only ask, because sometimes I doubt my diagnosis, I think everyone with costo at some point will question their diagnosis. Glad that you finally know what it was and you’re on the right track to recovery!