I'm on maternity leave at the moment, baby isn't sleeping great so I'm pretty knackered which my husband knows.
My DSC are staying for the next week and I have them with me occasionally during the school holidays, whilst DH works and other times he takes time off.
I've just been informed by one of DSC that they've spoken to their Dad who's said it's fine for both of them to have friends stay tonight.
So basically DH has agreed they can have a friend over each, knowing that he'll be out the door at 7am and it'll be me all day with a baby and 4 other DC until friends go home (which given its school holidays, who knows when that will be?)
I've messaged him and asked why on earth he didn't think to ask me first and apparently it's fine because he'll be there in the evening and then tomorrow they can just entertain themselves... (Yeah right, the house will be noisy, shouting chaos!) Oh and he apparently told them they have to 'be good'... 
I feel like I can't say no now because then it's me who looks like the horrible one.
They obviously have friends to stay but it's always been at a weekend when DH is also here and takes the lead with stuff.
I'm so annoyed that he's basically not even bothered to consider me at all before deciding it's okay when I'm the one who'll have to deal with it and he knows I'm knackered!
AIBU to be pissed off and think that's so out of order?