I'm A Bitch

Ever get those days when you feel like and act like a bitch? Lately I hate everybody, myself included. I don't know why and that is part of what scares me. I also feel blue and sad. Typically I never feel this way. I am usually a very upbeat person.
The only things that I can come up with is that at this point in my life everything is chaotic. I work full time. My youngest daughter who is single had to move back in with me. She is 21 and about to be a single parent. As if that weren't enough to deal with I am also back in school. I am taking a "readers digest condensed version" of a college class. I go to school every other weekend from 6 to 9 on Fridays and 8 to 4 on Saturdays,and then 8 to 2 on Sundays. In between I am trying to write 7 term papers and study for and take 3 major tests.
I have other children too, and even though they live on their own close by me they still have problems that I tend to worry about. My job has been cutting back on hours and I worry about finances especially with a new baby coming into my household.
I have lots of friends but as of the last week I have been keeping them at a distance.I also have a long distance boyfriend whom I have been pushing away. I feel as tho I am on the edge and falling is looking really good about now.
I have a day off of work tomorrow and I am thinking about making a appointment with my doctor. I know that he will just placate me with the latest drugs. I don't want to go that route, but yet I don't know what my other options if any are at this time. Thanks for letting me vent.