Breast augmentation - Fat transfer

Hi! So I recently read a post on here about silicon breast implants. I've been looking into augmenting my own breasts but I was looking into a fat transfer since my body is pretty sensitive & I'm iffy about silicon. From what I've read it's not for people who want a HUGE transformation, but I really am only looking to go from a 36B to 36C. Have any of you ever had this procedure done? What's it like? Side-effects? Before/after photos? Any info would be greatly appreciated!!