I've 100% been in your shoes. I know exactly how disappointed and scared you feel because I have gone through the exact same thing. One time I worked really hard to get an interview - kept dropping off resumes, leaving messages for the manager, going back several times until I got to meet the manager. She agreed to give me an interview because I deserved it after all of that persistence. Then guess what happened in the interview... I stuttered like crazy and blow my chances. I didn't even hear back to let me know that I didn't get it. It took me a really long time to get over that. I felt really ashamed and scared about what my future held. Would I ever have an interview that my stuttering wouldn't ruin? It was a horrible feeling. The good news is that I've had dozens of interviews since then, and most of them have gone well. I've had a few that I really stuttered in, but most of them have been fine and in some cases, terrific. Hang in there. Keep trying and I have no doubt you'll be fine.