I hear you! And my school is fairly supportive but it's just crazy at the moment - lots of people on long term sick/lots of irregular supply, pressure increasing because of the exams coming up and seemingly constant scrutiny.
I am completely exhausted and broke down on a colleague the other day
thankfully she was very supportive bless her!
I am putting it down to time of year and needing a decent break!
I just hope things improve soon.