4 months ago i had mild chest pain and difficulty breathing. it went on and off for a week. the doctor cleared me but it has now come back. any ideas?

Chest pain: You could have a cardiac arrhythmia brought on by coffee or medication or you could have an asthma problem.An ekg would be helpful as well as a visit to a cardiologist and/ or a pulmonologist

Chest pain: multiple causes for CP. Musculoskeletal, GI, lungs, psychosomatic (anxiety) and cardiac. Given your age and lack other cardiac RF ( unknown if cigarettes or othet substances are used) - puts you at a low risk for coronary artery disease. A simple treadmill test could help put your mind at ease.