I'm so sorry you are feeling so frustrated, but, it is totally normal! Don't feel bad, feeling frustrated and cranky does NOT make you a bad mother. I am not a single mother but I am still jealous of my DH's freedom, as much as I love my kids and don't even want to let my baby out of my sight, it still frustrates me when I see DH walking out the door to go to footy training, or to see a friend or go to the pub, (some) men just seem to be able to walk in and out so easily whereas I feel bad leaving Jack with DH just go and get bread and milk, LOL.