Safe healing

Since my son got teeth I developed a sore on my breast from nursing. It's not very big but it does cause discomfort while nursing. The problem is that because of nursing it never gets a chance to heal completely. Any suggestions? I don't know of anything I can use that is safe for my son to ingest.

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About Stacy Koenen
Current: Hales Corners, Wisconsin
Birth: January 09
On Moms.com since: Dec 18, 2013
I had my first child in April 2013, just before our one year anniversary. Riley has been an absolute joy and I love every minute of being mom. But I am the first among my friends to have a child, so there isn't always an easy place to go for advice.