L.O.
First N., congratulations on getting ready to become a mom. I'm hoping that you are taking good care of yourself; drinking lots of water, taking folic acid, getting rest, eating the proper diet, etc. while you are working towards your future career.
What I think is a good decision about you going back to work, or what anyone feels doesn't make any difference. As a matter of fact, how you feel about it right now may very well change the minute you look at your child. I was prepared to go back to work after my maternity leave, and to continue with my PhD about one year later. I've always had a career, first on Wall Street and then I went back to college and grad school with the idea of becoming a professor. I wanted a child but I always "knew" I would continue with my own dreams too.
When I held my daughter for the first time I decided that no one was going to raise her but myself. I quit my job and stayed home for the first nine months until I got a job as a post-partum doula (working evenings) and stayed home with my daughter during the day. I still intend to finish my PhD but I'm not on such a rigid schedule now. I continue to write and do research in my field of education but I am no longer my top priority.
What I'm trying to say N. is don't make a decision now that you may not want to have in 3 more months. Do your research for day care centers (FYI: finding a certified, liscenced center for a child under 3 months is difficult and expensive), I personally have not heard of a night center in Chicago but that doesn't mean anything. Also I highly recommend the book, "A Working Gal's Guide to Babyville" by a Chicago writer named Paige Hobey. I've seen it in Borders, Barbara's and Barnes and Noble. If for some reason you can't find it, or are unsure if you want to buy it, go the www.chicagoparent.com and go to "Back Issues". From there, click on May 2006 and scroll down to the article written by Ms. Hobey on childcare. It will give you some tips and you can decide if you want to get the book then.
Good luck to you N.. Make the choice that feels right to you but be aware that how you may feel could change and that's OK. That's what kids do.