Sore throat past few days with low fever. doc said not strep or lung infection. but now coughing bright red blood. is that normal for some colds?

Get back to the Dr.: Coughing up blood is not a good sign. I would get back to your dr. And be re-evaluated.

See a physician: Coughing bright red blood Coughing up blood can be caused by a variety of lung conditions. Coughing up blood, even in small amounts is always a red flag and needs to be immediately addressed. See your physician for complete physical exam and check your chest and lungs.