Breast tenderness

Savanna • Taking a break from ttc these days
I've had breast tenderness for a little over 2 weeks now. The pain is mainly in my nipples and also the side kinda near my arm pit. I've tested about 4 times and all were BFN's. There was no doubt in my mind that they were BFN's either. Should I be concerned at this point? I have never had pain in my breast before either. So this is very new to me!