Suggest Treatment For Stress And Depression

I get worked up from time to time and it tends to result in me self harming, either by scratching or cutting or mixing pills and alcohol, also I recently got worked up and locked myself in a room repeating 'make it stop' over and over, huddled in a corner with my fingers in my ears and elbows round head, which I know sounds pathetic, especially because it was just because I couldn't see myself meeting the target of work I'd set myself. I have exams coming up as a lot do and I know it's normal to expect stress but I feel as if my behaviour could affect my performance in them. Is this behaviour worth consulting a doctor about or is it likely to be seen as within the realm of normality?