You are likely a good candidate for a breast reduction especially if the weight of your breasts are causing you neck and back pain, poor posture, shoulder indentations from bra straps, and/or rashes underneath the fold of the breast. You would not end up with a completely flat chest since your surgeon will need to leave behind some breast tissue to allow blood supply to the nipple, but your surgeon will likely be able to remove a substantial amount of breast tissue. Your resulting breasts will appear more uplifted as well and sit higher on your chest. However since you are still young, it is possible that future breast development, pregnancies, and/or pregnancies could change the shape and size of your breasts further down the line.