Is it normal to have recurring dreams of your elementary school?
So I keep having dreams about my elementary school; I went to a pretty good school (in Beijing, China) for about 4 years when I was about 8. I have pretty bad PTSD from that time so I don't actually remember much about it, but when I dream about it, it all seems so familiar like "Oh, I remember that/you!"
More about the dream: In my dream I'm always the age that I am now (18), and everyone from my high school is there. It's as if classes are still going on even though we've all graduated, and they all know where they're going and what classes are next. And then there's me: and I have no idea what's going on. I seem to be aware that I'm dreaming and everything and everyone is out of place, and I try to tell my friends that this isn't real, but it's as if they don't hear me/ they aren't listening to me. Everything usually takes place in a cafeteria setting. In every instance of the dream, this is a constant.
Also, nearing the end of the dream (nearing the time when I wake up) I am always chased by something. It can range from a person, an animal, or just a feeling that I'm being chased. Last night it was a shark. Being caught causes me to jolt awake.
Is this normal?