Hi I was told about year and half ago that I have a extra heart. Also was told that my lungs aren't developed im 17 btw. So since my lungs aren't developed they get hook on my rib cage and I get bad sharp pains in my back and chest I was told they should only last no more than 5 mins we'll yetaerday it was really bad and lasted all day on a scale 1-10 I was say the was about 7. I been told I will grow out of but... how can I have pains that long and literally because of these I cant do nothing