Meeting my girlfriends parents.

Meeting my girlfriends parents. I have had a stutter basically my whole life, I am 15 now and have had it since I was 4. I got rid of it a couple times using speech therapy, but that only lasted about 6 months. I have a severe stutter and has taken a toll on my mental health knowing I can’t say things I want to say or a funny joke to my friends because it will take to much time, but anyways I digress. My girlfriend is begging me to meet her parents but I am hesitant and scared I am going to stutter. What should I do?