In rare cases, it is possible that you might not lose any weight. Besides, weight regain is also observed in some cases if the instructions are not followed properly.
If you're consuming high-calorie foods often after the surgery then you may gain weight again or will have an inadequate loss in weight.
Make permanent lifestyle changes to get the desired results.
Also, follow up appointments are necessary to check the progress.
In case of severe complications post the surgery, seek medical attention immediately.