What Causes Painful Breast After Years Of Child Birth?

hi, my names leigh..... oki basically..... since i had my daughter 4 years ago and my milk bags? developed in my breasts, my breasts have made me cringe, often they feel..... alien, and like they're not mine. They're often painful and feel like they're in my way a lot..... i'm not sure if this classes as a mental health thing, but i sometimes wish i could be rid of them, they reali do freak me out. please help!!!