Was this an alter and a dissociative episode Trigger Warning

******trigger warning****(talk of self harm)*****

I was wondering if anyone has experienced something like this. I have about 20 scars on my wrist from back when I wasn't sleeping and no one was helping me. I was looking at them a couple of weeks ago. I have always been present when I cut. I have always known my scars are there. You can't miss them. I just wear a watch over them most of the time. So I was looking at my scars and all of the sudden this anxiety welled up in my body. I was shaking my head and I could feel my eyes bugging out. I was saying Don't, Don't, Don't over and over in my head. Then I realized I was freaking out and I was okay. For about a minute though I was scared and freaking out about something that happened almost two years ago. That I've known about all along.

I have no idea It could have been just a burst of sudden anxiety. It could have been a normal flashback kind of thing. It could have been a dissociated emotion. It could have been so many things.