✱ 3 – Mucus Has Blood In It
It is not uncommon to have mucus coming up that is rusty in color which means it is tinged with blood every once in a while with bronchitis. That only happens if you cough so hard that blood vessels could have been broken. However, if this is a common thing, then the phlegm is coming from the lower part of your lungs which means it is pneumonia.
