 [ Symptoms ] i have had a cold for a week the cough seems worse than when the cold first started i am also coughing up some blood also when i blow my nose there is blood in that also should i see a dr [ Disease ] colds can set the stage for secondary bacterial infections so yes it would be wise to see your medical provider to be examined diagnosed and treated colds last a week so when someone tells me that they are a getting worse after a week and b coughing blood there is a clear indication to seek some hands on medical care