oh god i really feel selfish but as my babys teething he bites my nipple i want to express nd give…

oh god i really feel selfish but as my babys teething he bites my nipple i want to express nd give him the bottle bcz it really hurts i cant even relax knowing he will bite it during feed nd i dont want to scare him when i scream or something its not his fault to disturb his feed :/ are nipple shields just for sore nipples or i could use them to stop him biting bcz ill miss breastfeeding :(