It sounds like your angry and feel unappreciated. Are you just a servant? If so, than you need to let up and serve yourself. It really sounds like you are in a lifestyle that is not lending itself to taking time out for you. Maybe take some courses at night, something for you. Often wives and mothers get very bored with just the upkeep and it is work that never ends.

Think about what you can let go, ofcourse the children need attention, but they also need to learn how, if they feel this way, then there is an answer which includes taking care of ones self.

And also, have you tracked this, maybe you are having bad pms and don't realize it.
Bad PMS can thow an iron a mile sometimes.

And, I don't know how old you are but some women get really off before, during and after the change of life. Maybe a check with the gyno is in line.

Dont worry about the pdoc but perhaps it may be an issue that you havent considered yet and some pdocs don't think about that.

Just an idea
Open Eyes