Are you always depressed or does your depression start only when exams come around or does your normal level of depression go up as exams get closer?

Did you struggle as a child studying or doing school work? Did you always have to be prompted or reminded to stay on task by a teacher or to work quietly and alone during times of self study? Did you have trouble staying in your seat as a child. Were you quite forgetful? Did you have a hard time remembering instructions or do exactly as you were instructed?

Maybe try taking one of the ADHD quizzes on here and let us know the score. They are not perfect will give an idea though. Also more information would be helpful so we can give you our thoughts. Best of luck to you.
Also remember this is not the end of the road. Things will get better. Just have to stay persistent and slowly but surely things will get better.