Sounds like you need this. Dont be too hard about yelling at her. You know it probably wasnt the best way to react to her behaviour but you ARE human and from the sounds of things you arent in the best shape yourself, its not like you can call in sick from your mummy duties. Is there anyone you can call on to give you a hand to tidy up etc if the house is bothering you, or just to make you a cuppa, or take the kids for an hour so you can have a rest? Go easy on yourself with a baby and sm child its not easy (trust me i know) but in a few days you will look back and wonder why you let it get you down. Look after yourself and when you are feeling better you will look back and it wont seem so bad.