Hi, I hope you can help me. I am experiencing excutiating pain below my sternum and radiating into my back. It feels like a crushing pain, and it hurts more when I sit/lay in different positions. I was camping this weekend, and just came home today. I was sitting around a campfire for most of the night, and smoking cigarettes. I am wondering the pain is in my lungs? I don't know what else this pain could be, but it isn't getting any better and it's to the point of unbearable. Eating and drinking doesn't seem to be effecting it. I hope you can give me some udea of what's going on. Thank you!