I'm attempting to nurse my tongue tied 3 week old but am having to pump to supplement since she struggles to get enough from the breast with her tongue tie and high pallet. I run out of breast milk by the evening so I will give her some enfamil newborn formula. The formula causes gas, fussiness, and lots of spit up. Anyone know what could cause this and any recommendations? I am going to call the pediatrician in the morning but just wondering for tonight. My poor baby just screams and sounds like she's having bad stomach pain.