New swelling one week after Restylane in tear troughs? (Photos)

Had mild swelling/bruising in days after but day 7, very swollen under eye. Had more product under left eye.After I had mild swelling and mild bruising under left eye.By day 6, swelling was light/bruising under eye was almost gone.Day 7, woke up feeling pressure under left eye, the skin under eye pushed up into my vision.Under eye swollen and hard to the touch. Bump visible under skin.Went to doc who said it's not injection but could be allergy/sinus,so took meds w no change.Tried icing w no change.Did he overfill it? Why swelling a week later when better last few days?