Hi there,
I wouldn't get too worked up about this, you're body has been through allot recently and it needs time to settle into a routine.
You do need to eat to loose weight though, if you starve the body, it will hold on to any reserves it can to survive. So keep your metablic rate up by eating small and often. Watch what you're drinking too, fruit juices are especially high in calories and alcohol.!!
Keep your chin up, you're not alone in this, lots of people suffer the same as you. I have too!!
Lynsay, Aberdeen, Scotland xx