Can someone please explain to me why my boobs are still sore since the 15th of the September and only progressively getting more

Tender.. I had a real light 3 day period on 20th and all my tests up to the 28th said negative.. but I'm SSOOOO Frigging sore on my breasts and nipples and they feel so heavy!! And on top of that I'm never full now.. I'll eat and literally when I finish about 20 minutes later I'm hungry again.

SOMEONE PLEASE GIVE ME SOME ADVICE!!!!!