Juvederm can be dissolved very easily with hyaluronidase. You need to find a dermatologist who has experience with fillers and they can inject the hyaluronidase. You may need to have the records from your other doctor so that the dermatologist can know for sure what product was used and how much...
Juvederm in the lips tends to cause swelling; this is probably what happened. If you liked what your lips looked like while swollen, then you probably need more filler injected. Visit your doctor again for a follow-up to get the results you want. Most doctors will inject conservatively at first...
After 3 days, Juvederm or Restylane (any HA filler) is integrated into the tissues where it is injected. Most patients will note some minor degree of swelling after filler injection, partially due to the actual needle stick(s) into the tissue, partially due to fluid absorption into the HA....