What's wrong with me?

For several months I have been feeling like my perception has been turned inside out. I have been seeing things so differently, especially when I am at school. That's the only place that I really am surrounded by a lot of other people. At times I feel very cut off from everyone else, and have a feeling that's kind of like being under water. It scared me at first, but it's been so long that I've gotten used to it. Also, I've always been a deep thinker, but lately I've been drifting off in my thoughts for long periods of time, completely forgetting everything about the present and the environment I'm in. And then when I snap back to reality it's weird and I can't really get remember how long it's been. I've been losing track of time a lot. When I interact with someone or do something for a while and then I'm back alone right afterwards, I feel like I can't get a sense of how long ago that was. It's hard to explain but I feel like I'm in one big haze. Can anyone relate?