I wish I had the confidence at age 18 to tackle stuttering head on instead of doing everything I could to avoid speaking. Good on you, and you should be proud of yourself, and you seem to have a good mentality. Your family member is a jerk. You already know you are not ”fixing“ your stutter. You are building confidence. You are using the resources your university provides to improve yourself and your future. That’s why you go to school. It’s what you pay for! Are you embarrassed? Doesn‘t sound like it. Enjoy yourself. Believe your teammates when they tell you not to worry.