Hi I m 21 years old and I have been having a shock like feeling in my left breast . It comes and goes quick. It s a sharp like pain . The first time it happend I was breast feeding my child. Today it got it again earlier in the day, I was also breast feeding my child. I got it again just now but I was not feeding my child. It was more frequent this time. I was wondering what this could be? Should I be worried?