I had an episode last night where my voice suddenly no longer belonged to me. If anyone knows what this is please help.

My mental health isn’t great, I have PTSD with complete disassociations/flashbacks/nightmares, all kinds of anxiety, panic disorders... you get the idea.

I was overwhelmed but nothing extremely stressful, kid stuff. But as I was cleaning up after my preschooler I suddenly had the most intense fear I have ever felt of anything ever. Like something or someone startled me, but it was of nothing. I literally screamed. It was just for a second, but then after that my voice didn’t belong to me. It was like someone else was saying the words for me. Every time I tried to talk it was like a delay in head playing back. I ended up putting my kids to bed because it got so bad I couldn’t speak at all. And then I could hear it in my breathing. Like a sort of reverb effect. I kept having to talk myself out of thinking that someone else was actually talking and breathing for me. I couldn’t shake the feeling it wasn’t me and I couldn’t stop crying.
I put in headphones and listened to music and it took a few hours to go away, and even then it was a gradual decline. 
This wasn’t like my normal dissociative episodes or flashbacks. It was totally different like I wasn’t who I am, but I was, but also someone else. 
I feel like this makes no sense. 
I didn’t miss any meds and my therapist just said to let him know if it happens again. 

Please tell me there is someone who can explain this.
