Why is my stutter getting much worse?

Why is my stutter getting much worse? I’m 16, about to turn 17 soon and one thing I noticed about my speech is that my stutter got worse. About 2-3 months ago i could speak somewhat normally and my stutter was mild. Nowadays it’s moderate to sometimes severe. I’m starting to lose hope and becoming more angry with myself each passing day. I used to think I’d outgrow my stutter, but it’s the complete opposite. I just want to talk like a normal person.