Life changing breast surgery

I am a 22 year old in desperate need of help. I am trying to save money to get a breast operation as I suffer from severe back problems and have a significant amount of loose skin on my breast especially for someone my age as a result of having large breast. I am currently overcoming an eating disorder as I saw losing weight as my only hope of making my breast size smaller when in fact it's become worse. My self esteem is at rock bottom and I have ruined relationships as a result of this. I have no one to help me as my family struggle financially. My doctors refuse to help as there is no physical signs of back damage regardless of my eating disorder therapists reports and concerns. I can't bare seeing myself in a mirror and being naked around anyone petrifies me. If you could help me this would completely change my life.