I think taking some time (even a few days) for yourself before the baby comes is such a GREAT idea!! I was planning to work until I gave birth with dd. At 39w3d I went to the Midwives office for my regular exam, I had poofed way up, couldn't jam my fat feet into my shoes anymore & asked for a note. It was a Thursday & I was due the following Tuesday. I ended work that DAY (didn't even come back for Friday, ROFL) and then had that following week at home by myself. It was the best thing I could have done. I had time to rest, get last minute stuff done, stock the house with groceries, etc.
This time I'm home with dd, so my maternity leave will start when I'm in labor, ROFL. (For real this time, I don't think i'll be able to get a note, haha). I also teach classes 2 nights a week. Last time I took 3 months off. This time, I'm literally taking the minimum amount of time I physically can. It's my only income other than Angel Wraps & I need to be working. I'm thinking a few weeks & then I'll take the baby with me for the frist few weeks back (I teach Lamaze & breastfeeding, etc).