Although it can take 6 months for the swelling to fully resolve, you should be looking better than you did before your procedure. Also, if the swelling is getting worse, this really needs to be assessed in person. Schedule an appointment with your surgeon to be examined and discuss your results. Sorry to hear that you are unhappy. Best of luck.
If you have not gained any weight, you still may have a fair amount of swelling. Do let your surgeon check you to make sure you do not have a pocket of excess fluid causing part of the swelling.