I had a peek at your Nutrition Tracker. A couple things I noted - IF you are entering all that you have eaten, then you are under-eating, and not getting enough protein. 1200 calories is the minimum for an average weight woman who is sedentary. When you factor in a bigger person, and/or exercise, you need to eat more to accommodate this, and that is what your body is trying to tell you.
I noticed that a McD's Burger only had calories - make sure that you have the protein/fat/carbs entered as well, because then you will be able to tweak your nutritional intake based on knowledge (feed-back from the tracker.)
Also, you have only been doing this a few days - it is possible that you have dropped the calories very quickly. If that is the case, go back up and gradually work down to the range SP has given you. That can make a BIG difference because it allows our body to get used to the reduced calories gradually - kinda like tricking the brain. I had to do this is small increments of about 50 calories, because otherwise I would get woken in the middle of the night with severe hunger pains, and I would also feel very light-headed and nauseous throughout the day as well as during the night. I only had about 400 calories to drop, too, so it wasn't a major!
| current weight: 151.0