My nipples have been very sore for at least the past week. Theres very faint redness on my breasts but they feel fine. I got off bc over a month ago (the ring) and have been using condoms/spermicide and had 2 negative pregnancy tests so I've ruled that out. I'm expecting a period in a week or so but they've always been irregular so its hard to tell. I figure its because of hormone changes after getting off bc, but this hasnt happened in about 6 years and I've been on and off bc plenty during that time. Any ideas?