From a 29 year old who's had all the bad experiences that come with stuttering, they sound jealous. And I'm not saying that just because I can, girls have this very weird way of picking on people they think are better than themselves in one way or another. The fact they've decided not to pick on the stuttering itself screams "I don't want to look like a bitch but I am going to act like one". Try and take no notice and hold that head high! You are so strong for getting through today, don't let anyone make you feel differently. They're not meant to be your friends, focus on the ones who are <3