Breasts no longer get sore

Ca

Since having my son, my breast no longer get sore before AF. I breastfed him and pumped for 10 months. It’s been almost 10 months now since we stopped. I used to get sore breasts for at least a week before every af, and when I got pregnant they were sore, but now that doesn’t happen anymore. Just wondering if that’s normal after breastfeeding?