I am having sharp needle like pain in and around my left nipple. I am 21 years old. I read on the forum that it could be due to hormonal changes, but I have perfectly fine menstural cycle (5 days, with a gap of about 27-32 days). The pain began a week after my periods. I also read it could be due to pregnancy but I have never even had an intercourse. It is really worrying me, please help! :(