To think dh is unhappy?

[splashparrot]

Been married 9 years and have 2 young dc. Dh doesn't have a bad temper but seems very easily wound up and irritable lately.
He has recently started drinking every Saturday night as Sunday is his day off.
He says he's fine and just wants to chill out, when he's irritated he says he's just wound up but I see this more and more in him lately and it doesn't seem to take much, he's a gamer and gets really annoyed with his games but insists he's fine and enjoys gaming to unwind.
He seems to have less patience with the dc but then says he would like to have another child.

He's also put on a lot of weight, partly due to the beer but he's also eating a lot of junk food in the evening (maybe comfort?)
I have tried asking him if anything's wrong and he says he's fine, and happy and loves me and dc but I just see someone who's not happy, has no patience and everything annoys him.

I dont see anything wrong with having a drink on a sat. But if his attitude has changed then maybe he's depressed or something.

The drinking started as something we both did about once a month, we don't have a lot of child care so made a date night at home, takeaway, few drinks but this has recently increased to him drinking regardless, he wasn't much of a drinker before so it's just a different behaviour.
He just seems so frustrated all the time.

I might be old fashioned but could you manage paying a sitter and get out just the 2 of you? Even to the poub?