Sore Breasts CD 28-29

Courtney
First... I have a slightly longer cycle 30ish days and fairly irregular.
Now... I've had a couple cycles while TTC where I got very sore breasts shortly after ovulation. That, much to my disappointment, end in AF.  
I haven't charted or gave much thought this month because I was traveling for work during most of what I think was my O week, though we did BD the day before I left.  
This cycle I have had no noticeable symptoms until yesterday my breasts are very sore and now that I think about it I'm having more discharge... Kinda like EGCM but a little creamier... Sorry TMI.  I'm CD 29 so I would be 3w6 or so.  
Any opinions?