So great that you've found your nitch as you present in your Ph.D. field. Confidence must have impacted your ability to present. I stuttered from childhood but became fluent at 70 through psychotherapy dealing with an abusive childhood. I think you'll find that confidence breeds more confidence as you stutter less and less. I've become so used to being fluent that I have no more exception of stuttering anymore. I wish you continued success in your chosen field, and fluency presenting to groups. Sue