I've been stressing out a lot about Uni recently, maybe getting a few hours sleep a night (last night I got an hour). Never have I felt worse in my life.
If there's no other way to reduce your workload, get a certificate of illness from a doctor and delay some of the work or examinations or whatever is stressing you out. Don't ruin your health. If exam preparation causes you so much stress that you can't sleep or focus anymore, please see a doctor, there's a good chance the doctor can help you with coping with the stress.
