Thank you for your response. I will be sure to leave you positive feedback, but I'd like to get a little more reassurance since I do not have health insurance and I will have to pay out of pocket for the visit. Considering my symptoms, age, and circumstances (low activity, heavy marijuana use, etc), do you think I could rule out something more serious such as lung cancer or COPD? I would just like to be sure so I do not stress more than I need to. Thank you for your patience.