Dull cramps

TL

Hi guys,

I've had super sore breast for the past couple of days and my AF is due in 4 days. I usually have sore breast before I come on so I wasn't too concerned about that. Today I went to the bathroom and I had spotting and I'm also experiencing a dull pain on my right side. My AF is never early, I can time it like clockwork so I'm just curious as to what it could be. Hoping that it's a good sign. Has anyone else experienced that before?