My wife says she has been experiencing sharp pains in breasts, sore nipples and pink. she has been breast feeding our new borne. should we be worried?

Probably not: In the first few days and sometimes week or two of breastfeeding it can be painful. This is especially true if first child. There are many things you can do to relieve pain and the la leche league can be a good resource. If there is localized heat or redness or you have a fever there may be an infection and should see a provider to confirm. Even with infection you do not have to stop feeding.

Probably normal: This presentation sounds like normal breast feeding discomfort. Worrisome signs for masatitis would be a hot swollen breast, tender to touch with red inflamed looking skin. Women should keep their nipples soft to avoid cracking. An easy & inexpensive way to do this is to use cherry flavored chapstick on the nipples. This helps infants latch on to the breast since they like the cherry taste.