I'm worried.

Okay so a long time ago, like over a year, I saw this weird bump on my boob. It's like in the areola area and there's little bumps or whatever there anyways. But this bump looked weirdish? I ignored it all this time, today i was in the shower and I looked at it and it seemed really white and I just tried squeezing it like a pimple and this white stuff came out. I don't if it was puss or what? I'm really worried that something could be wrong, is this something to worry about?