i think im developing a stutter.

i think im developing a stutter. english is not my first language so sorry for anything weird. I am a 17 y/o girl and idk whats going on, i have been stuttering for about a week with small words like no, um or the begining of a word. today i cant speak a full sentence without getting caught on a word or not being able to start a word my friends think im faking it and its getting really annoying to talk so i dont wanna talk anymore. idk what to do