Breastfeeding moms I need advice!!

My eight month old is exclusively breastfeed. He will take a bottle but only breastmilk and he refuses formula.

Well he just got his first bottom tooth and started biting me.... I would just pull my nipple out and relatch him. BUT TODAY he bit my nipple so bad he made me bleed.... how do I stop this my nipple hurts really bad! Should I stop breastfeed and just start pumping? Is there any tricks? I’m nervous to put my boob back in his mouth lol

Help!