Stuttering coming back.

Stuttering coming back. I'm 16 years old and I've stuttered for most of my life but it went away almost completely by the time I was 12/13. When I was 14 went through a traumatic event which practically forced me to go to an independent study highschool​ where I don't​ really talk to anyone. I realize that I'm starting to develop a stutter again and certain words are difficult for me to pronounce. How do I treat this issue? Attending regular highschool isn't a viable option for me.