What would cause my boobs to hurt

Cassity • Laila 05/15/17, Xander 4/10/18, and Grace 11/06/2019
I miscarried on May 15th and then finally got my period June 22nd-28th. It was very spotty and I only bled for two actual days. The rest was spotting. Which is exactly what happened the month before I found out I was pregnant last time. My boobs still hurt and actually are hurting more and more and seem a tiny bit bigger. Not sure what to think...