what happens to breasts when you stop breastfeeding

I breastfed my son for 8 months, stopping 2 weeks ago today. I weaned to the point where I was only nursing 1x a day, in the early morning before work and not pumping at all. My breasts are so lumpy and painful right now. It's hard to even hold my son because the pressure on my chest is unbearable. Basically is this normal? I just figured after 2 weeks there at least wouldn't be any pain. TIA 🙂