I ran warm water up my nose for a few seconds and then I blew my nose as hard as I could. Out came a huge glob of mucus with blood and dark yellow color to it.. I could not take it apart it was really hard like cartilage. I've been sick for four days now.. Started with chills at night, woke up with sore throat, fever, ear pain, and body aches. What could this be I did receive my flu shot this year...