At about 4 weeks post op I was reaching behind the seat of my car and I felt a sharp pain in my right nipple. When I get cold my right nipple seems to "harden up" later than my left. It seems as if there is even a bit of numbness on the right side of that nipple. Today as I was swimming in the lake and I felt the same sharp pain sensation as I was reaching back. I am wondering if I will experience any more lack of nipple reaction to touch. Anyone experience the same thing or have any imput?