1 week is a short period of time, and isn't a good indicator of what's really going on. A see a few things in your post that got me thinking.
Half way through your cycle? So right when you would be ovulating? That could cause a change in weight (it's not just our periods that cause us to add water weight).
If you were exercising for 1900 calories a week and consistently eating 1200 for a long time, your body could be saying "OMG there's FOOOOD again!!!" Our bodies are famine resistant - if they think you're working hard hunting and straying far and wide to pick berries, it will hold on to weight, and then when you finally put food it in will decide to keep a little extra because what if this is it? When it realizes food though, it will work itself out.
Weight loss isn't linear. It just isn't. The numbers may say you should be losing weight, but more importantly your body is trying to hold on to it as a survival skill, to heal, to aid in bodily functions. Stop looking at this one week at a time, "only" a few ounces, etc. Focus on health and feeding your body and let your body work out that there's no famine.
Edited by: MEGAPEEJ at: 8/1/2013 (12:46)
Do something everyday that your future self will thank you for.
| current weight: 179.8