Hello Jin, and a very warm welcome to the WeMitts. Post aften on the general thread each week (as well as starting others if you want to) and you'll soon get to know what a wonderful, supportive group of people the WeMitts are. We truly UNDERSTAND!!!!
If you estimate 4 lbs a week, on SS, you won't be far wrong. Some weeks will be more, some less, but in the long term, 4 lbs a week is what you can expect to lose (and I'm talking FAT!! not water)
Ann xxx