Believe to have had reflex during the night and now have sharp pain the goes from back to front of chest., hard to get a deep breath without pain. This start last night after eating and falling asleep shortly after, pain started when I woke up.. No known heart problems, no high blood pressure but I m a 56 year old non smoker. What should I do, I really don t want to go to the doctor. No fever, just pain in left side of upper back and chest. I have had reflecting in the past, but do not ever remember this pain. I do have a lot of back problems. Advice please