One thing I've learned through over a year in speech therapy is going into it trying to hide it as much as possible usually doesn't help :( Whenever I worked (full time student now), I was worried people would be flabbergasted that I stuttered but you really have to fake it till you make it. Along with many things, if you don't act like it's a problem they probably won't (of course unless they're a jerk then you might want to avoid them or tell upper management if it's bad). It will be hard but just take a deep breath before and go into it. I'm glad you stayed and have friends there, a job with friends really helps :) You got this!