Everytime I sneeze, my sternum snaps and whatever is directly behind it and the bone itself is in extreme pain.. The pain lasts for about 5 minutes then eases. I also feel it when i press my palms together to use my chest muscle or lay down on the floor and try to lift my head up. I brought it to my chiropractors attention and nothing helped. It will be almost a year since this "sneezing pain" started. Iam a 37 yr old female with a farming/ranching occupation.