Breast Shield

Thaydene • Wife and first time mother to my little monster. Baby boy born on 12/7/15: the day my life began 💙 thank you God 🙏🙏
Has anyone noticed a decrease in supply with use of a Breast shield. I've been using one lately only on one side and when I pump im noticing a significant decrease in the amount of milk that's usual for that side (all other factors remaining the same). Any input will help. THANKS!