Coughing up a little blood :(

United States
@koalatbs (2233)
March 12, 2009 10:36am CST
I'm a little scared because a few weeks ago, on and off, my lungs felt a little congested and sore and every so often I'd feel a little wheezy. But, it seemed to go away. It has come back briefly from time to time but just a couple days ago when rinsing out my mouth there was a little droplet of blood. I didn't think much of it at the time but it has happened twice more. It is just a little blood but each time a bit more. This morning my chest is sore again, the feeling you get when you are getting a chest cold or respiratory infection. I don't know what to think or what to do. It doesn't seem bad enough to go to the doctor but the little bit of blood worries me. Anybody ever have this happen to them before or have any suggestions?