Hi! My skin test for TB was negative just four months ago. For the last ten days I have had phlegm that was red at the beginning and is now brown. I have light coughs which are not so bad. My throat has been sort of dry and a little sore. It occurred to me that a couple of months ago that I had blood in my phlegm after I got water into my nose in the swimming pool. Can it be connected to the swimming pool (chlorine) water? When should I tell about it to my doctor?