Yellow or greenish chest mucus is generally a symptom of infection and is often a sign that you should go to your doctor. Chest mucus that contains blood is often a symptom of a more serious infection such as pneumonia or TB, and large amounts of blood in the chest mucus should be seen as a medical emergency.
In California, your residency depends on how long you live in California, what ties you have to the state and local government and whether you are financially self-sufficient. You must be physically present in California for 366 days to become a state resident, except for brief absences such as vacations.
1 A nonresident alien is classified as a resident alien for tax purposes if they were physically present in the U.S. for 31 days during the current year and 183 days during a three-year period that included the current year and the two years immediately before that.