Deep indented scar on pubic area?

I had a very bad ingrown hair that I decided to dig at with tweezers/needle. I think it got very infected and I tried to clean it out with products that might have been to harsh for the area. After all healed with it left behind what appears to be a pitted scar. Any idea on how to fix this. I have a dermatologist appointment set up soon any idea what they will suggest or what kind of treatments are available.