I went to a filler place, i told her i have a natural keyhole shape in themiddle of my top lip, and asked if she could mak sure it is filled in along with the rest of the top lip to make it symmetrical. 2 weeks later when it came to my check up it travelled to the side of my top lip. She said that the middle area cant hold lip filler no matter how pricise she tries to be. Is my best shot to go a dermatologist/plastic surgeon ?& What kind of filler & type of technique would work best?