Teacher "laughed" at my stutter

Teacher "laughed" at my stutter During my Latin oral question, I stuttered on a word. I usually put together sounds of different words, so while reading a specific word it came out as a coarse word, not a swear word, but surely not one you would use in school in front of a teacher. I ignored it as I always do when I make some embarrassing stuttering, but my teacher remembered it, and later laughed at it. She didn't mean to make fun of me, it was just funny in the context. Yet it made me very upset. I told her what I meant to say but she insisted on what I mispronounced.