Asthma, angina, muscle? diangosis w/ asthma when teen. never experienced wheezing ever. recently had very mild chest tightness when walking up stairs (not heavy or painful). i smoke marijuana & have anxiety

See a doctor: These symptoms are not normal, and you should see a doctor for an exam. Your profile says that you are not a smoker, but smoking marijuana is smoking too. Good luck.

Needs evaluation: Nobody can diagnose the cause of chest pain purely on the basis of symptoms. If they are occurring with exertion, cardiac and lung causes need to be considered, but they can also be related to asthma or anxiety. Your doctor needs to take a thorough history, do a physical examination and then may want to do further tests. Xanax (alprazolam) is a very short-acting drug and there may be better choices.