My stuttering is coming back in my adulthood, and I think is becoming worse.

My stuttering is coming back in my adulthood, and I think is becoming worse. I'm lucky that my speech is the best in high pressure situations like public speaking and job interviews. I even worked as a college lecturer for some years. Although my stutter it has always lingered there, rearing its ugly face when trying to pronounce a hard word from time to time, I was confident that I had it mostly controlled. But over the latest couple of years, I have noticed that it has been coming back. Today I tried to have a conversation with a coworker and I stuttered like I haven't since I was a tween. This has me worried. Has anyone suffered stutter coming back during their late 30's?