Why am I being such a b***h?!

I'm 34w3d and turned into SUCH a cow. Like, I only realise it after I've said something mean.

My husband is usually so even-tempered and patient, but even he's been getting fed up with me.

I told him last night I'm fed up with all the expectations of my family and his as regards Christmas this year and want everyone to F off and leave me in peace. It was SUPER mean of me, and out of character to get that nasty.

Anyone else been in / currently in the same boat?