Both these requirements indicate extensive knowledge of current cosmetic surgical techniques. I've always felt awkward having large breasts. I do experience some back pain. In general I feel self-conscious about them and try to hide them as much as possible. I know I would lose quite a bit of weight if I felt better about them and myself.
Many young women undergo breast reduction surgery.
Your age is less important than your history of breast development. If your breast size has remained stable for six months or more, you may be a good candidate for breast reduction surgery. You indicate that you feel you are overweight. Ideally, it would be best to lose some weight before considering this surgery. However, it is not uncommon for women to complain that even with weight loss, their breasts do not reduce significantly.