Couldn’t say “bye” today

I usually am able to say simple words really fluently, but I just moved in with a new roommate today and I have been kind of nervous getting to know her because we just met. I usually stutter more around people I just met or when I want to make a good impression. I was leaving for class and tried to say “bye” to her, but my mouth literally did not move at all😭 I ended up just stuttering out “ok s-s-see you later”. But like that’s never really happened to me were im not able to say a simple one syllable word. Just wanted to vent a little about this.