Been having sore nipple as if my sons isnt latching properly! I did use the nipple shield but then…

Been having sore nipple as if my sons isnt latching properly! I did use the nipple shield but then he learned to latch on his own no problem and been nipple shield free since he was 5 months old. Hes 10 months now, and I been fine until just recently. Note: he still has no teeth, maybe hes teething? And hes biting down more making my nipples sore?? HELP!! MY NIPPLES HURT.. has this happened no anyone