Relax. It does happen. Your body thinks your starving and is holding onto the weight. Give your body a chance to catch up. Several of us have had this happen. I lost for 2 weeks and then not an ounce for 3 weeks. I know exactly how scary and stressful it is to stop losing almost immediately. You will absolutely start losing again, when your body is ready. There are a bunch of posts on here about stalls/plateaus and how and why they happen. Even more on us regular folks freaking out about them lol Try to relax and don't weigh yourself for a week or so. As long as you are doing what your weight loss team told you to do, you'll be fine.