How can I qualify for a pro-bono surgery, to remove all of this layer of excess skin from having 6 c-sections? (Photo)

I am 45 yr old women, I had my first pregnancy when I was 14, I was unable to have them vaginal, so all of my pregnancy after that all were c-section, since I've gotten older I've stopping smoking cigarettes and been trying to lose weight, all the dieting and exercise is not getting rid of this belly, my doctor has put me on Phentermine 37.5mg to help me get this weight down, I've been on the pills since December 1st 2014, I feel now that my body is used to them, they're not helping any more.