Are you sure the weight increase is not muscle? Do you measure yourself - hip, thigh, tummy, etc?
If you're creating an energy deficit, and obviously building muscle bulk, and experience weight gain, then in all likelyhood it's muscle weight you've gained - unless you've kicked your body into starvation mode due to your low energy intake.
It's possible you're caliper measurements are erroneous. It's also possible that the fat cells have taken in water to replace the lost fat (this is just a temporary balancing attempt) and it's water retention you've been measuring.
And, finally, MetalCharm is spot on about the calorific intake. That's way too low according to medical standards and almost certainly WILL force your body to retain its fat stores at the expense of other internal organs and your overall health.
Another good tool source is the link at the top of this page.
1) Click on Diets (next to Home) to open the Diet menu bar
2) Click on Diet Tools
The Diet Tools menu has some useful tools such as:
* Body Mass Index (BMI) Calculator
This BMI Calculator is designed to help you get a sense of whether your weight is "Underweight", "Normal", "Overweight" or "Obese".
* Daily Energy Needs Calculator
This Daily Energy Needs Calculator uses the Harris-Benedict Formula to determine your average daily energy requirements.
Striving to improve in every way possible.