A It could be swelling or it could be product that is placed a little too low. Only time will tell as most swelling resolves in 48-72 hours. If it is product, it can often be massaged by the clinician to smooth out any obvious demarcation. Lastly, if a hyaluronic acid filler was used, it could easily be dissolved with the antidote (enzyme). That's usually a last resort. I would advise going back to see your provider as they can best help you to get resolution :) Good luck!