Very sore boobs

Sometimes four or so days before my period starts my boobs will get a little sore. They've been sore now for over a week and my period isn't supposed to start for another six days, and they’re getting more tender each day. This is really odd for me. I don't want to symptom hunt but this is strange. I'm not gonna test until I'm officially late though. Anyone get really sore breasts way before AF and end up with a BFP?