I have had some chest discomfort for about 2 days. It is very mild and more of a achy pain. It is right over my
sternumSternum - view of the outside (anterior) and goes away when standing. The most pain is while sitting or lying down. The
sternumSternum - view of the outside (anterior) itself is also slightly tender with palpation. The pain does not increase with excersise and I do not have a difficulty in breathing. What could this be?