I am experiencing chest pain or discomfort (side: both) (worsened by: bending forward, after deep breaths) (severity: mild) (quality: sensation of...

Unlikely angina. Given your youthfulness ur pretest probability of heart artery blockages is low. Having said that lifestyle choices can change that probability. Your symptoms specifically are not consistent with heart artery blockages. Consider musculoskeletal pain, rib pain or pericarditis for instance. If symptoms change, see a doctor.
Chest pain. You will need to see a doctor licensed in the US for specific diagnosis and advice. You will likely need examination. Here is some general patient information on possible causes - and when to seek urgent attention. http://patient.info/health/chest-pain-leaflet.