I am male (22, I was normal like all the boys in my age group until my 16th year ,One day I felt small pain on my nipples after that I could able to see my size of nipples increasing, And now I have almost�2 cm big puffy nipples�, the weird thing here is the size of my nipple is temporarily reducing on these occasions After bath, Whenever I feel cold From last month I am doing push-ups, I can notice change in chest, but no change in nipples Please suggest me and help me to reduce puffy nipple.