Why didn’t I lose weight?

Hi im 28 year old female. 2 weeks ago I start diet and exercise. So I went into a calorie deficit of 1200cals a day, I started a bike class 30minutes every day except Sunday when I did cardio at home. I increased my water intake to 2/3 litres and I’ve been watering whole foods grains loads of vegetables and fruit. Yeah when I stepped on the scales this morning I have not lost anything. I started at 14 stone exactly and I’m still that. I feel quite down now, I really worked hard by exercising everyday and eating right. I even weighed out my food so I knew I was getting the right amount of calories. How has this happened? I feel so defeated like there’s no point in carrying on now.