Midterms and final exams represent..

When I begin prepare the midterm or final I'm very nervous!, because in the oral exam always I mistake and I finished speaking very bad often are grammar mistake. I feel that I'm under pressure all the time and for me is impossible to concentrate in the writen part, I think that I'm a bit better in that instead the oral presentation, for example at this midterm I had the best grade in the culture part midterm.
The worst of myself is that I have a bad memory, so this affect in the oral exam. Really I hate midterm oral and final it, because all that week I'm feeling nervous.