Sore boobs/nipples

Deanna
Ok!! So I've had insanely sensitive nipples the last week and a half or so. I can feel everything even through my bra not to mention the fact that my boobs are constantly sore/throbbing. So, I took a pregnancy test and it came back a BFN. Any ideas as to what it could be? I've never ever experienced tender breasts in my life before AF paid me a visit.