Wow seriously 3 months and nothing :(

Hi - please provide your height, age, and weight, and your daily calorie goal.
It might be helpful if your food diary was unlocked so that we could see.

You sound like you've been extremely fastidious and accurate in your logging.

Thank you :-)

You have a basal metabolic rate (BMR) of 1,440 calories [1]. This is the amount of energy that your body uses in a day for life-sustaining functions like respiration, circulation, processing toxins, etc. This is the nutrition that you would need if you were on a hospital bed in a coma. Goes without saying that you shouldn't be eating less than this.

Your Total Daily Energy Expenditure (TDEE) is probably on the order of 2400 calories per day [2]. This is your BMR plus your lifestyle activity - brushing your teeth, going to work, walking the dog, working out at the gym. I selected a moderate level of exercise based on your description.

I'm not sure if you're eating back your exercise calories at 1200 (net vs gross) but I think your single biggest problem is that you are undereating. For corroboration, please read this: http://nbsfit.com/nutrition/weight-loss-isnt-always-about-eating-less-and-exercising-more/

You should probably be eating around 1900 calories a day if you are exercising as vigorously as you say. You should definitely not be netting less than 1450. It screws your body totally up and prevents you from losing weight.

It's a shame because it sounds like you have really been working your butt off and you deserve great results! So loosen the reigns a little bit, stick to a higher intake for about 6 weeks, and watch yourself feel better and the pounds melt away.

[1] http://www.bmi-calculator.net/bmr-calculator/
[2] http://www.fitnessfrog.com/calculators/tdee-calculator.html

Muscle burns fat. You probably need to build more muscle, and to do that you must eat more. It's a fact. Then you should start seeing a drop in fat percentage but not necessarily in weight. However, since muscle takes up less space than fat, you can weigh more but still look and feel fit.

Have you measured yourself with a tape measure? You probably have lost inches.

I second what everyone else is saying. Your body is attempting to use the food you put in it as fuel and little else. You should be eating at least 1500 calories (probably closer to 1800, use a bmr caculator and then TDEE, and make sure you eat just less than that), if not more considering the amount you exercise. Mix it up, eat MORE - more whole foods, more good for you fats like avacado and peanut butter, more of everything - and don't lose faith! Make sure you stick with a new intake level for at least a month before expecting changes/assuming something's wrong.

I'm not even going to begin to pretend that I know very much about weight loss compared to what a lot of people on here do, but if you're doing everything you say you are doing, and still not losing weight, maybe you should talk to your doctor. You never know, there could be a hormonal or thyroid problem that needs addressed. Like I said, I am no expert, but if you're this frustrated it can't hurt.