pimple/white head on nipple?

has anyone ever had a bump on their nipple area? i noticed it last night but just thought it was bc i got a chill and i get little goose bumps on my nipple area and i looked today and i tried popping it and white came out of it. i sleep naked and sweat ALOT while sleeping... just never got it there before. i have got smaller ones in between my boobs on my chest. 😥🤔