I have anxiety and depression, help ?

You are so overwhelmed! I get a lot of the same symptoms you have explained when I get panic attacks. You may want to talk to a doctor and try some anxiety/depression medicine or try talking to a counselor at school just to get all of this out . Most importantly you need to take care of yourself. Start doing some activities outdoors in the sunshine draw, meditate, walk.. whatever just do something to relieve some of the stress.