I woke up in the middle of the night because my chest, left side was hurting a lot. it took me a few minutes to be able to go back to sleep because the pain was so strong. I am 19, 5 ft and 120 lbs. I dont know if this could be my heart since I had a few organs damaged when i was in a coma at 17 with toxic shock. is this pain heart related or a common thing? someone suggested heartburn but I thought that was related more towards the center of the chest and a stomach issue..