D.S.
I am nursing my daughter and have dropped a considerable amount of weight since she was born in early December. Honestly though I don't do much. We try to eat healthy foods (I very rarely, as in once a month) fry anything. I try to eat a lot of veggies and salad & drink tons of water. I don't really restrict my portions though...if I'm hungry I eat. Also, almost every day that it is warm enough I go for a walk. I take my dog, my two year old son, and my 4 month old daughter and we walk at least a block; though usually I try for 2 or 3 blocks (depends on how my son is feeling). he big thing with the walk is that I put my daughter in a maya wrap & carry her; the bigger she gets the better my workout! Most D. I also try to fit in around 3/4 of a mile on our eliptical machine. We got ours for around $80 dollars from WalMart.com. It's nothing fancy but it gets the job done.
Sorry this turned so long...best wishes on loosing the weight.