There's a long post somewhere about water retention in week 3, lots of people have small losses or don't lose at all! I didn't lose at all last week but lost 4 and a half pounds this week. Don't give up!! It will come off next week if you stick to it
It was probably one of my long rambles

but I can't find it. But basically, it goes like this:
No matter what diet you're on, you don't lose a consistent amount of weight each week. You don't even lose weight each week.
But whatever the scales say, you will be losing fat if you're sticking to the plan. I've heard folks say that what's happening is that your fat cells are losing the fat that's in 'em, but they're filling with water instead.
By and by, when your body's sure that it won't need to fill those cells with fat again, it'll let go of the water in them. And da da! Off comes the weight.
Sadly, you've fallen victim to a common Week 2 / Week 3 phenomenon - no progress on the scales. Scales lie. They can't always tell whether you've lost fat.
Don't be disheartened, Caz. What you're going through is entirely normal. Entirely frustrating, but entirely normal. Hang on in there! :hug99: