Hi there!
Sounds pretty normal, but it's good to check it our with your dr. and become comfortable with your body. It's important to know what's normal and not normal and have a good relationship with your physician.
Best wishes,
Chris
Healingwell62
Breast Cancer 1 & 2 Community Leader
it can be normal to get pimples round your nipple, but a white bump/ulcer type thing can indicate fluid, ie a fluid filled cyst. it would be unlikely to be anything serious due to ur age and history, but id get it checked out to be sure. nxt time dont leave it 5 yrs though! any changes report them. good luck. x