Anyone experience a swift change in symptoms?

On Sunday evening, over the course of a few hours, I suddenly developed extreme detachment from my body. This is something I never experienced, it has all been thought-based and feeling detached from voice and face. I now feel like my whole body including head are foreign to me, and are autonomous. Has anyone else experienced a quick dramatic change like this? From DP to different / worse DP? I am not on any medication.