Sore Breast

Kim • Boss mommy w the one God chose for me. ❤️💍
Since I got my first period in GR.3 1 week before my period my breast gradually get sore. I'm 1 day away from my period and my Breast are super Soft! I'm kinda in a confused state because I've read sore breast could also be pregnancy... Which I am 1 moth TTC. (New to the game). I'm hoping for the best but your Opion ladies, what could be happening?