Please don't worry. ..psychiatrist won't prescribe you medicines without talking to you and understanding your case.
Since your board exams are near, if the psychiatrist prescribes some anti-anxiety medicines , they will work fast.
With psychologist , you can refer after your exams. We as psychologist assist the client in understanding the root of problem and healthy coping mechanisms are taught to client . Since the sessions with psychologist takes about 1 hour and has to be weekly or fortnightly, you can consult psychologist later.
Next Steps
Try to maintain a regular routine and eat healthy and light . Go for a short walk after putting in few hours of study.