What's going on with me?

I read this article about depersonalization and derealization. Apparently they're different things but I experience some of the symptoms of both. Like In depersonalization you can feel like you're an outsider observing yourself, feel emotionally numb, like your memories lack emotion or weren't yours. I also experience feeling disconnected from people I'm close to, perception of time being messed up like stuff happening yesterday was like a year ago. But why do I feel like when I say things I didn't really say them or they were just in my imagination is that a symptom??