Wondering !!!

So for years my boobs would always hurt at least a week or two before my period would start that’s usually my sign ...... last month I had my period all good and fine ☺️ but then like a week or a week in a half later I finished with me period and my boobs started to hurt .......my boobs hurt right now and it’s after my period i was done with my period can one please help me understand why ? Is this normal I’m just confused because for years it has always hurt before my period not after my period !!!!