Hi, I am 15 and had peritoneal dialysis when I was 4.I've been left with a scar straight under my bellybutton.?

Having been fat a lot of the time due to a strictly restricted diet, I am now a lot fitter and therefore want to be proud of my body but the scar frankly looks like a small bottom/fanny. I was just wondering what I could do about it, i.e. plastic surgery/medical cover ups etc? I've heard that I'm entitled to some sought of skin graft on the NHS? Thank you in advance for your help.