DTD last week - I was definitely ovulating as I had my Clearblue monitor flashing a smiley face at me 
Anyway, I have sore breasts. Not massively so, and not unbearable but there is a definite dull ache in my nipples which comes and goes and, interestingly, is stronger in my left nipple than my right 
Good sign, or too early? AF is not due for another 10 days.