It’s possible stuttering is your only worry. But due to the nature of your obsession with stuttering, I would assume you may have a tendency to worry a lot in general. I recommend reading “Redefining Stuttering” by John Harrison, someone who stuttered for many years and was part of the National Stuttering Association for many years. You can find a free version at the below link. I was surprised to find the book for free after seeing it was sold out on Amazon. https://www.freestutteringbooks.com