After a bit of poking and prodding i localized the source of the pain to just
right of center of my chest right below
my collar bone. Normally i would not give this a second thought, writing it off as a strained muscle from the coughing, but i also noticed that there is a rather pronounced bump about where my rib meets my sternum. As i said, this was about 3 or 4 weeks ago, and since then it has quit hurting, although is still sore if i apply pressure to the bump.