Very emotional

My emotions have definitely peaked today. I’m exhausted running around after my 2 other children 3yo & 15mths. Made them tea they ate some then the youngest tipped it all on the floor and my 3yo copied and when I said she should know better she questioned why could her sister do it but not her and I just broke down. The mental struggle is real I’m due next Saturday and I’m ready for baby boy to arrive so I’m more mobile etc. I’ve had an overwhelming sense of depression & happiness all at once! Sorry for the rant ladies 😩