Bfn 9dpo but sore breasts

🎶🙃 • Pro Life, Animal Lover
I got a Bfn on 9DPO and I've had sore breasts since about 7 DPO. I'm currently 3 days from af And still have sore breasts but now they're tender to a touch. I keep getting really bad pinching pains in my lower left abdomen & they come & go, along with bad back pain and I'm so fatigued! Help anybody? I need opinions please!