Hormones!

Everyone knows that a pregnant woman is not responsible for anything she says or does ;)
Seriously, if you're doing or saying stuff you don't usually do, it's normal. Anything you do, it's normal. Don't sweat it.
PS- your hormones won't go back to their normal pre-pregnancy levels for about 2 years. Just breathe and cut yourself some slack.
PSS- if you have a c-section, it takes your body even longer to adjust. Since your body doesn't realize it gave birth, you still feel pregnant for a few weeks, then your body gets confused and kinda goes haywire.