Did you just start working out as well or just start the nutrition part? When you start a new exercise program it "shocks" your muscles and you retain water for the first week or two that is helping your muscles repair. It could also be that you need a metabolic reset, if you've already been restricting for a while. 1200 is low, and if you've been maintaining that for a while your body will get used to it. Try to follow the plan and eat to fill you up without tracking calories for a week or two so your body can readjust (you may gain a little as your body figures it out) I've lost 60lbs so far (counting and working out) and have had to do a reset twice because my metabolism was so out of wack to begin with. Hope that helps.
Hang in there, I hadn't lost any in the last month. I finally lost 2lbs this week and decided to measure myself. I hadn't lost any lbs but I'd lost around 7inches. I'm realizing the scale is definitely not always the best way to track success.