I have been breast feeding my son and pumping but when ever I breast feed he still acts like he's hungry plus he's been having tummy pains and stuff I really didn't want to use Formula but I have enfamil gentlease and I'm hoping it at least works with his tummy. I know breast is best but when is comes to my son I think fed is best and I just want him to feel better. Anyone else using Formula and breast milk? How is it going for you?