Is it common to feel a change in personality after going under full anesthesia?

It's been one week since my procedure, an explant and breast lift, and I feel this odd burst of energy. Compared to my baseline mood, this feels like what I imagine (mild) mania to be. I love it, don't get me wrong! I am so glad to have the surgery behind me. But this seems excessive–I don't feel like I need to sleep much and I am dying to heal enough to run a bunch of errands and start projects that I didn't want to do prior. Anyway, I'm afraid of a crash. Any wisdom, doc/s?