Both my boys were born at 33 weeks, and our 2 yr old was an emergency Csection. My body hasnt' looked the same since and I haven't lost hardly any of the baby weight. I feel the same as you, I don't really know where to start. As I've said in most of my posts, I was never over weight until my kids came along so its hard for me. Through this site I found the www.myfit.com
site and it's a good way to keep track of calories and see what you are eating and what you have too much of or need more of.
Not to mention this board is the best thing I've found the last 2 years. Everyone here is so wonderful, helpful and supportive.