Pain around my heart area. costochondritis?

This sounds like costochondritis and taking some motrin/ibuprofen regularly for a week or so can often help clear this inflammation up. But, any activities using your arms or repetitive movements or lifting can continue to irritate these muscles and they will not heal up. If you haven't gone to WebMd.com and typed in costochondritis, do so now and read up on how to care for yourself with this condition. You need to change some of your activities that you do with your arms if you want this to heal up completely. As for the shortness of breath, this can be from not being in good physical shape and the activity level you are doing is stressing your lungs. As you become more conditioned, this aspect should go away.