I am really sorry to hear that. I know exactly how you feel. I am in college and had to give some interviews for an internship. Apart from being anxious and nervous about technical stuff which my friends can relate to, stuttering is just too much to handle, I can mostly communicate easily among friends and family with mild stutters but interviews and nervous situations make it so much worse where I choose to pretend I don't know an answer rather than saying what I want and it's really hard for anyone to actually understand how bad it feels. In an interview, I was informed an hour before about it and I panicked. The anxiety was insane, I badly wanted to just cancel it, but I couldn't. I stuttered badly in the interview, but the guy was understanding and I got the intern offer. lol I didn't know why I wrote all this and I don't know what you should do with your job, I just hope you don't feel alone in this.