Hello my little one was born premature 8 weeks early spent 2montha in the nicu and now home he started on nutramigen and was spitting up a ton screaming arching his back and his tummy was hard as a rock went to the pediatrician and he said he has an allergy to the protein in milk and put him on elacare still didnt do much and then pediatrician started him on reflux medicine been on that for two weeks now and he still arch his back screams spits up a ton and can tell he just not comfortable does anyone have any suggestion on a formula I should try the pediatrician said next step could be soy I just want my little one to be happy and not in pain thank you!!!