It's a weird, crazy journey having a disfluency. Everyone has bad days and better days and it's incredibly cathartic to vent....you're doing the right thing. We are all on our own individual journey. 12 years ago I wouldn't cold call anyone and delegated phone calls to others including resturant reservations etc. I'm now presenting regularly to groups of 50 and don't hesitate to make calls when needed. I'm nowhere near fluent 100% of the time but I'm at peace with knowing people are more interested in what I'm saying rather than how I'm saying it. You're going to be just fine!