My nipples are cracking during feeding. Is this breast cancer?

An eczema- like rash. That persists after a few wks should be biopsies but it sounds like chapping.
Hopefully Not. Cracking nipples during breast feeding is often related to the minor trauma of feeding. However in rare cases changes in the skin of the nipple can be related to a type of breast cancer called paget's disease. Have your medical profession examine you and monitor.

Related Questions

What happens if a woman had to have her breast removed, due to breast cancer, could she keep her nipple?

It may be. possible, but best to discuss this with your breast surgeon. Read more...
In some cases. some women can have a skin and nipple sparing mastectomy. It depends on the size, stage & location of the breast cancer. It also requires a very knowledgeable surgical team with a breast cancer surgeon & a plastic surgeon working together. Read more...
Poosible. Depends if it can be saved and used. Discuss with the surgeon who is in the best position to answer this question. Read more...