HELP. AF due 11/15

I'm currently 6/7 dpo. I usually never get extremely sore boobs before my period comes but today and yesterday I've noticed that my nipples are extremely sore. My nipples are purple and weirdly hard (sorry tmi), and my areolas are darker in color. I've never really had this happen before so I'm just wondering for those of you who have had children or are currently pregnant: has this happened to you? And if so, are far along were/are you? Thanks!