Think I stutter more than you from how you've described yourself but yes mine is also hugely anxiety based. Need to see a doctor for medication and they would try different doses and types to see what works best. Only issue is, I'm too anxious to see a doctor because when I talk about my stutter I block so bad I can hardly get a word out so how would I even tell the doctor? Plus the whole checking in at the waiting room, trying to say your name in front of all the other patients yeah f that.