Breast surgery

Hi, i'm 20 and have absolutely hated the shape of my breasts since I first started developing. They haven't really changed since I was 14. I'm strongly considering getting breast surgery to generally change the shape. I have made an appointment for a consultation. I have to admit i'm a little anxious. I'm scared that I will regret my decision but at the same time i'm so sick of feeling this way about myself. Anybody here have any tips regarding surgery, doctors, decisions in general?

Thanks:)