Its been a week my left nipple is hard inside. it doesn't pain untill i touch it . It pains like someone has poked a needle but it not that pain pull but once while closing the door , door slightly touched my nipples and it was a bit painful for minute.When i touch it, it feels like something inside has become hard and its oval in shape.. 6months back i suffers from tuberculosis . and i am 25year old man . did this happened to anyone else?