I am an 18 year old male, 6'2", 130 lbs. I do not have any serious medical history aside from allergies to toxins in the air. I have not taken any prescribed medication, nor have I taken any medication at all for several years now as I hope to build my body's natural immune system. I have bronchitis, and have had the infection for almost a week now. Recently, when I cough, I smell blood, but I never see blood. Should I be alarmed?