Hi I am 60, and have stuttered my whole life. I agree with the person who said they don’t give a sh*t now. Sounds like the stress of medical school really impacted you. I would go out somewhere and stutter openly, it takes away the fear, do it a few times. Then work on relaxation deep breathing and go out and in low stress environments, a store, a cafe, etc… and speak. I feel like you need to build up some positive speaking experiences. I went to a residential program in Geneseo NY, it really helped me.