At your height and weight, I'd suggest starting out at something more around 1500 to 1600 calories a day, especially if you're active or exercising. If you go too low, you could stall your weightloss. It's not always as simple as well...if I need to lose 3500 to lose a pound, I just drop my calories down as low as I can possibly bare and meet that 3500 goal faster. There is more to it than that. The body will have a way of compensating if it feels you're trying to starve it. You can always try 1600 first, then adjust down 100 calories for a week and see what happens. Find the place that works best at keeping you satisfied AND losing weight.

Makinthechange, I can see that you are working very hard on this! I think you have gotten good advice. I especially agree with the calorie counting suggestions because it sounds like you aren't eating enough. What I want to do for myself is to learn to eat in a way that I can sustain for the long haul. I have tried starvation diets, and they work, but here I am back again because I didn't keep the weight off. We don't want that, do we?