For me, breast tenderness is my main PMS symptom. It starts right after ovulation and goes until the day I get my period. The 3-4 days right before my period are the worst. Every morning for those few days, I just push my boobs together with my arms, and the morning that the tenderness lessens significantly is the day my period is going to start. Never fails!

I was just thinking about it today, as my period started, and I thought it was genius yet hilarious in a way.