With this, my fifth pregnancy (and my fourth, but it was an early miscarriage), I had majorly painful breasts from about 12dpo. I mean, the type of sore where I would get out of bed in the morning and hold onto my breasts because gravity in the morning was too much to bare. also, right about the time of my

, I noticed my aereolas were larger and darker.
In my fourth pregnancy, the one that ended in early miscarriage, I woke up a week after my

, I was about 21dpo, (got my bfp on 14dpo), and my breasts didnt hurt at all. I was scared sh*tless. The doctors office called me and gave me the news I expected, my hcg #s had dropped in half. An hour later, the miscarriage started.
this pregnancy, which occurred two months later, i was OBSESSED over my breasts.. pushed on them almost all the time to make sure they still hurt. was SO scared to go through that again.
Funny thing tho, with my first three children, I dont remember my breasts hurting til alot further into my pregnancy, so i dont think there are any hard or fast rules regarding breast changes.