Dear friend, welcome and thanks for entrusting your query here at HCM!
I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here.
I am a bit worried about your pain in the rib cage
Yes. Commonly anyone would first think of ribcage/ cartilage
pain. Is it tender to touch?
Does a deep breath increase pain?
Are you breathless sometime? Is there any sweating, dizziness
Did you weight-lift/ exercise heavily?
There are many possibilities. You should at least get an EKG and an Xray done.( especially if the ribs are not tender/ painful on pressing on them).
Lungs and heart need a look if there is no local tenderness.
I hope you are fully satisfied with the guidance I gave.
Hope I have answered all your questions. I would be glad to answer any further queries. Please ask for any clarifications before closing and rating this answer.
Thank you and Good luck! Keep me posted on your progress.