Sore nipple

Teri • 32 years old. Engaged to my love of the past 13 years. I have 2 beautiful children ages 12 & 10
One of my nipples are extremely sore. I have never experienced this before and I don't know what to make of if. I am ovulating right now but I'm not sure it has anything to do with that. Has anyone else experienced this? Should I wait it out or go to the doctor?