Is it normal to feel disassociated from yourself?

I've been feeling like... It's very hard to describe, but essentially I'm feeling like nothing I feel is my feelings. Sometimes I hear things as if it's coming from the bottom of a well, out of focus as if I'm hearing through someone else or something of the like. And pain and touch are faded or numbed, but disassociated is still the best description.

And every single emotion isn't real; they're all hollow.
It took less than a day for depression to fade to nothing, Joy is minute and nothing but irritating. Even anger doesn't feel like I'm actually feeling it as myself.