I am fairly certain i may have pneumonia/bronchitis but my doc says nothing is wrong. i am very ill what should i do? i know something is wrong.

Second Opinion: See another doctor immediately or contact the first one and ask to be re-evaluated. Your situation has changed (worsened under observation) and a doctor needs to hear about this from you!

Pneumonia?: Do you smoke? R u exposed to 2nd-hand smoke? What symptoms do u have that u feel u have pneumonia or bronchitis? Have u had a chest x-ray? Can follow doc's advice, or can seek out second opinion. Stop smoking (if applicable); avoid smoking areas.