U poor thing ,i do sympathise.I'm a bit like that myself.I hear myself snapping at my hubby or kids & i feel awful but like u i just want to lie down & b left alone.Feeling ill half the time doesn't help of course.
I said to my son last night to please b a good boy today for me as i don't feel well but he's 9 & hyper & excited about christmas & just started holidays so he is acting a little crazy atm.
I read one of the other ladies were taking rescue remedy ,maybe that would help? I guess other than that just recognise that u r feeling cranky & count to 5 or 10 before u respond .Take little time outs,even if its just for 5 or 10 minutes.I know that's hard with other children there but set them up with an activity & then sit down & put ur feet up & read a mag or something while they r quiet,& keep reminding yourself that u will have a break on wednesday.
My daughter had a screaming fit yesterday because i tried to put a bandaid on her(she's autistic so little things can really set her off),she was throwing herself around like the tassie devil & cut her knee open & banged her head while she was doing it so then she was even more hysterical & i ended up yelling at her because i just couldn't handle it & i wanted to cry.So i do understand how u feel,sometimes u just have to walk away & sit down & breathe for a minute.