I stuttered really badly on my Senior project presentation. What got me was being nervous, as always. Keep telling yourself in your mind that you will do better. Make yourself believe that you will get better. And practice. It’s bad right now so understand YOU WILL stutter come exam. It’s okay. Get through it as best as you can RIGHT now and work on it from now on. Find what makes you stutter. Find how your stutter is formed. Work work work on it my bud. You can do it. What I ask of you right now is, come exam, be okay with the fact that you are gonna fail, feel that it’s okay, but do good anyways. I believe in ya and come the exam I also believe that you will stutter less than you would have been. I know you can. Good luck :)