Hi, may I answer yHi I have been experiencing chest pain and episodes of shortness of breath I am asthmatic and last year had mycoplasma pneumonia, I was born with a pectus excavatum (chest wall deformity), I also have low lung capacity. I have seen a heart specialist and they can’t seem to find anything wrong with my heart, I have had echo’s, heart ultra sound, blood pressure and they all came back fine. I do however have inappropriate sinus tachycardia. What do you think is causing this pain and shortness of breath; I am going to see a lung specialist soon. our health queries right now ? Please type your query here...