M.L.
B.- you have described exactly what I just experienced a month ago with my 15 month old son. It was so odd to suddenly have nipple pain when I never had any issues before. I avoided going to the ped because I was afraid they were gonna tell me to stop nursing and I wasn't ready to do that. So I suffered (and it was getting unbearable) until I took my son in for a horrible diaper rash and she looked in his mouth and saw the white spots. I never even noticed them! She prescribed liquid nystatin and told me to put the antifungal cream I was putting on his tush on my nipples as well. It worked almost instantly. RELIEF!! And, now I regret waiting and avoiding the doctor because it was also affecting my son and I had no idea. So.. go to the pediatrician as I am most certain that this is also what you are experiencing. Hope you and your child feel better soon!