I'm feeling a burning sensation inside my right lung when i run or jump. i boxe but in this month i duplicated my sport activity. what could it be?

See your doctor.: Since you are young, it is probably not anything serious. However, you need a physical exam and perhaps a chest xray to look for rib fractures or abnormalities in the lung, such as scaring or atelectasis, which can cause burning with activity.

RUQ /chest burning: Short of breath? Could be asthma or reactive airways, or gas in colon which rides high, or reflux or gallbladder, rarely cardiac . Get checked for asthma( PFTs) , consider EKG, consider simetnicone ( Gas-x )before running f/u/ w/ doc