Does This Sound Like A Normal Panic Attack?

Hi, I have depersonalization and OCD badly but yesterday was the worste and scariest feeling I have ever had. I was with my girlfriend and I felt very focused on my body and what I am, which I have been doing this whole year. I started getting the thought of feeling locked in my own body and couldn't escape. After a while of thinking I got a really weird sensation like I was locked in my own body, I then kinda blanked out and started screaming wrestlesty. It didn't feel like me screaming. I couldn't control the screaming. I felt me screaming and heard it but it felt totally involuntary. Really scary. It felt like I was stuck in a nightmare and couldn't escape from it or myself. When I came to, I asked my girlfriend if I was screaming and she said yes. That freaked me out! After that happened I still felt like it was going to happen again and I am still feeling weird and depressed like I can bring this on just from thinking. What happened to me?