Hi, I had some sort of episode this afternoon, while I was driving. Out of the blue, I felt painful pressure in the middle of my chest and radiated down below my sternum. It was hard to breathe. A minute into this, I felt the same painful pressure in the middle of my upper back. It felt like someone was squeezing my chest and upper back together. Then about 2 minutes later, the back pain radiated down to my lower back. It hurt to try to take in a deep breath. This episode lasted approximately 15 minutes before the pain stopped and the breathing was somewhat normal..then I was only lightheaded and extremely drowsy. I made it home and fell asleep. I woke up feeling wore out. Can you please tell me what this episode could have been? I never experienced this before and it scared the life out of me and my 18yo son. Thank you. Rita