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.
Should the lawful permanent resident have a continuing need to reside outside the United States close to the expiration of the reentry permit, they can apply for a new reentry permit (should ideally apply ninety days prior to expiration). Again, USCIS can issue a reentry permit valid for a period of up to two years.