Ginger: it's tough to figure this out. If you feel well, why worry? However, you don't sound like you feel well - it sounds like something is not right.
I don't think that the state of your house is anything other than a reflection of the fact you have a lot to do (it sounds very much like mine.) To be honest, it sounds like you first port of call is to sort out your home life. I used to do a lot more of the housework than my husband, but having a second kid + me being so poorly afterwards actually helped him to realise he needs to take a consistently equal share. I'm still the one who buys presents for birthday parties, remembers his Mum's birthday etc etc, but everything else is split very equally.
Having read that book I suggested, I think that I am on the very, very edge of the bipolar spectrum - so much so that the hypomanic end of this never manifested itself until I took Ad's for the first time. They made things X100 times worse. Now I'm on lamotrigine I feel great. I would say that my problems before all of this happened was low grade depression. The times when I was 'depressed' was mostly to do with energy levels. I didn't really 'think' like a depressed person (ie lots of negative thoughts), but I would feel like I was wading through mud. I could sleep 12 hours a day and still feel utterly exhausted. I didn't have the energy to do anything. I just wanted to curl up in a ball and tell everyone to leave me alone. I still did all of my usual work, but it was painful to keep going.
I sat down and took an honest look at the last 10 years of my life, and saw that I have cycled between feeling like this and feeling very well (sleeping 8 hours a night and feeling well rested, being happy to get out of the house and see people etc.) There was no apparent reason for these shifts in energy.
So....er... what was my point? I suppose that don't let this 'diagnosis' make you dig your heels in and insist that there's absolutely wrong. It's possible that you're a 'little bit' bipolar, or that you are suffering from low-grade depression and all of this talk of hypomania is cr@p, or it might just be the stress of your home life that's taking its toll.
I'm sorry if I'm going on and on, but I really do feel for you. I've spent the last 6 months feeling confused, angry, sad and everything else over this bipolar question. Reading that book helped me to understand things better, and realise that lifestyle changes could be enough, in time, to keep me well.