Achy breast

Has anyone experienced achy breast? Not sore or sensitive to touch, but definitely achy mostly when I’m laying down, doesn’t matter if it’s on my back, side, or stomach (I only notice it at night ). It’s been happening since maybe 5-6 days before af, I’m now at 3. I know it could be a af symptom, I’ve just never felt like this. Anyone else ? And what happened ?