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.
If you are not a citizen of one of the listed countries, then you do not need to apply for a temporary resident visa. Typically a temporary resident visa is issued for up to 6 months. There are circumstances where visitors stay for longer than a 6 month period, discussed below. If you require a visitor visa before entering Canada, there are a number of factors that CIC will consider when reviewing your application.