You have to give yourself more than a week to lose weight.
Once you lose the weight you want, you'll have to continue to eat right and exercise to maintain that weight.
I'm in maintenance mode now and it's just like losing (I get to eat a little more) because I still track my food and exercise.
I've lost quickly in the past and guess what? I gained it back. Take your time to lose because it gives your body and your brain time to adjust to the change. If you lose too quickly your body won't adjust and you won't have learned the lessons for healthy weight loss that doesn't come back!
I'm assuming you want to keep the weight off once you lose it.
Follow SP guidelines and you will get to where you want to be. You can achieve a healthy weight and lifestyle. It takes time.