I was always big in high school and then I lost 125lb's. I also had a long period where I didn't lose any weight around 240. Now that I have put all that weight back on I am expecting the same result after my sleeve on the 24th.
What you have to do is keep on track. Your body is still adjusting to the weight loss. Also you maybe putting on a little more muscle, witch will make it appear you are not losing on the scale. Just keep it up because once that needle starts moves again it will be coming off just like it was before.