i have the same thing now but on my lefft nipple ,, i am goin to the doctors to get mine checked , i think you should to .
It is best to have your doctor take a look at it.
This could be something that is related to hormone changes that are going on within your body and it could also be something similar to a cyst. I think you should ck. with your Dr. as it might be some type of minor infection (pimple-like) and could require treatment. No matter what it is, it's always best to have it ck.d by your Dr. Take care .....