Water fasting

I'm a female who is 280 lbs. If I go on a Water Fast will I physically look like I have lost weight. Will I lose just water weight while on the fast? Because if that's the case I don't want to do this fast. I know this fast isn't suppose to be just for weight lost and its supposed to be a rest button. I just don't want to waste time. I also still have to go to work. I know losing weight will take time I just don't want to do a Water Fast to lose the weight gain it all back on the diet. I also know that I will have to eat right after the fast. But will l lose FAT Tweet