My BB's have never really hurt, they feel full, a little increase sensitivity but nothing more than that, not even now. I didn't really get symptoms of nausea until 6wks, and it's very mild, nothing I can't manage, same with the heartburn. Then there are days where I really didn't have much of anything. It will come and go, it's hard not to over think things but give it a couple of days. As long as your BB stay full, and don't go back to their pre-pregnant state and you don't start bleeding, I would say things are just fine.