Crazy me coming across this cause I literally went through this two weeks ago when I had to interview for a job too! You described a lot of what I went through as well. It was birthday last week and I heard back from them saying I got the job! If anything, the my determination even with speaking with a stutter really impressed the hiring officer. She said she saw a lot of determination in me and that’s what they were looking for. So honestly just be yourself because it honestly takes a lot of stress and fear off your shoulders. It’s important to remind yourself of how valuable you in situations like this. I was so proud of myself for breaking out of my fear and interviewing for the job because it’s a great one and I’m living it so far. Proud of you too and I wish you the very best in your new job. You’re not alone in this so take comfort in knowing that. Oh and Congratulations!