As someone who’s finishing up their bachelor’s degree, I can tell you that you never feel 100% confident doing presentations (stutter or no stutter), but they do get significantly easier. I’ve stuttered for as long as I can remember, and I essentially do 1-2 presentations per week this current semester (most I’ve had by far). If I’m being honest though, you begin to care substantially less about what people besides the professor think during presentations, and teachers 99.9% of the time will grade the content of it, not the quality of your speech. Don’t stress, if you stutter- you stutter. You’re in college, and college students are generally understanding and probably won’t remember your presentation about 30 seconds after it’s done, no matter how bad you stutter.