Off Days...

I have been feeling a little bit off lately, so I have a doctor's appointment tomorrow. I spent last night trying to get some house work done (the bulk of it was done by my husband!), but only got a couple of loads of laundry done and folded. I just feel drained, nauseaus (sp?), and have had a lot of headaches lately. It doesn't feel like sinuses, and it doesn't feel like pregnancy... I just feel off. Know what I mean?