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.
There is a 30 day grace period once a residence visa expires; however, it is advisable to begin the renewal process in advance. The same documents need to be produced, and a new health check carried out. The fees are the same. Family visas are permissible on if your earn more than 4,000 per month.