Pain in boob

Nichole • Mommy to an 👼🏻 baby and to our 🌈 baby boy’s, Charlie 6-12-19 💙💙 Emmett 5-18-21 💙💙

My left boob is in a lot of pain. I am breast feeding and it’s painful to the touch. Not the nipple, but my actual boob. This boob is smaller then my right boob as well. Is this normal?