Do not panic with the weight gain, it is normal. It’s just water retention and it will go away. Keep a healthy diet and you should only weigh yourself one time a week. Try not to focus on your weight as long as you know you are eating healthy. Drink your water because it will help release water retention. I’ve done core de force and the first thing I noticed was my stomach was the first to show weight loss. Keep it up! You can do it!!!