Sore breasts help ?!

Shila • Mama to Maya 3.25.19 💕|27| Engaged💍

Okay so I have been having sore and sensitive breasts for 3 weeks now, I got my af on sept 18th and finished the 23rd I figured the sore breasts would have been because of my af but I still have breast pain it's so sensitive any time I accidentally bump them its excruciating. Has anyone else had this problem? Anyone know what would cause that and what I could do to help it?