Hi Dr. Rynne, I felt like I had indigestion when I woke up this morning, after eating shortly before bedtime. The symptoms were a little different than I ve had in the past. There was a tightness in the center of my chest, towards the back, and at one point I had some shortness of breath. The shortness of breath didn t last too long, but I still have the tightness. Should I be concerned? I am a healthy 66 year old female.