Hello, I am 24years old . I don't understand whenever I take bath I can see white/yellow pores/spots on my nipple and I am not pregnant . I can see them only when I stretch the part of my breast . I have pregnancy test it was negative and also done with ultrasound it was also negative . What is happening . I was intimate with my partner on 28th of June I had a pill then my periods was delayed a week and which was very light . Then I had my ultrasound and pregnancy test it was negative . Then why I am seeing white/yellow pores on my nipples. Please help .