Take and leave out the bar and let your nipple heal. With the bar, you probably have interfered with your ducts and breast feeding may be more difficult. The bar probably tore tissue from being inside your clothes.
Reducing the size of the nipple is a very simple procedure that is done in local anesthesia. For the most part, it includes wedge like removal of nipple, with preservation of most of milk ducts. Reduction of the larger areola and correction of tuberosity can be done in the same time without...
You did not post photos, so I cannot be specific. You are still early in the healing phase and still have swelling. Once you reach 6 months, if you are still concerned, then post photos or go back to your surgeon. Please let your surgeon know now all your concerns.