Thanks for your question. Here is a similar post to yours to which we have a lot of information in: https://www.empowher.com/community/ask/sharp-burning-pain-my-nipple-now-breast
Please read through it and let us know what you think. I also want to point out that if you have any discharge from your nipples or the pain is persistent it is best for you to see your doctor as we cannot diagnose you from our end.
Please keep us updated,