Each person has their own journey. BUT you are a lightweight like me.
Have you read THIS thread?
http://bariatricfacts.org/threads/its-not-pounds-its-percentages.1844/ What is your height and what would be your weight for a BMI of 24.99 (top end of normal)? Anything above that is excess weight. So if your normal BMI top end was 145 and 146 was overweight, then anything above 145 is excess. NOT where you want to be but what is above normal BMI. AND if you lost weight pre-op, that changes the dynamics as well.
This chart might help. (and notice, these are not by pounds but percentages)!
2 weeks - 5-10%
6 weeks - 10-15%
3 mos - 20-30%
6 mos - 45-55%
12 mos - 60-70%
18 mos - 75-85%
Lightweights of any surgery and DS'er lightweights in particular tend to lose ALL their excess by the end of the first year. BUT NOT in the first month. You are still healing, your body is pissy and things will change.
I do NOT count my highest weight since that highest was NOT even in the equation. My highest weight was in 2002. I didn't get the DS til 2011. ALMOST a decade later. So I go from my sign in weight at the surgeon's initial appt.
CHILL!!!
Not chilling is stressful and
stress can lead to weight GAIN!
Give your DS a chance to work...don't over think this. I know it's hard but give it a chance.