So secret that I don't even know

Sometimes I worry about myself. I can forget about everything I did in one time.
Sometimes I walk from one place to another. But when I reach a destination, I can't recall what happened during the time from when I started, and when I ended.
Sometimes I even know something exactly happened, but can't recall the source of it.

Do I have Source Anemsia?
Or maybe, I have split personality. It takes over, so I forget what's happened.
Or even, it's possible.... I could be a casual sleeper agent from a secret agency....O_O no one would ever suspect me as a special agent.