One breast is darker than other and peeling around nipple, does this mean my skin is dead and I may need a skin graft?

You may have had a small stitch abscess. If a permanent suture was placed, and it is now exposed, you probably need the suture to be removed. This may cause the areola to expand which may eventually need a revision. Best to be seen in person to be sure.

Nipple hypersensitivity is sometimes seen after breast reduction or augmentation. While you may be tempted to protect these painful areas, you must do exactly the opposite: massage, rub or pinch the nipples frequently during the day. You will find that the hypersensitivity lessens and then...

It sounds like eventually you may be a good candidate for a Breast Reduction. I would recommend waiting until you have ffinal breast growth which usually occurs from age 18-21 for a more predictable result. Other considerations is the potential inability to breast feed after surgery.