For the past several days I've been having sharp pains in the left nipple while nursing. It also hurts a lot when my ds first latches on, but the initial pain subsides after a few moments. The top half of the nipple is a bit red and swollen, but no itching or burning. I don't have any soreness in the rest of the breast, and the nipple doesn't appear to be cracked. I am using lanolin on it and a breast shell to avoid further irritation. When I first started nursing I had a lot of trouble with sore nipples, but this is completely different. I'm not exactly sure how to remedy this problem so any input would be appreciated.