3 week bby on nan optipro however squeals spits up milk also groans like tummy cramps passes gas lot runny poo should i change formula and which brand is better simalac comfort or nan sensitive or infacare?

Breast milk is best.: If you had a baby before, what did they tolerate may help in determining what is more suitable for your infant. Infants tend to have loose stool at that age, so that should not worry you. It is important to burp baby well after feeds to reduce bowel gas pain. Breast feeding only is adequate at that age if possible. The baby is the best person to help you determine what his bowel would tolerate.