My son was born at 27 weeks he came home 2 months ago. He was on breast milk until he left the hospital he is 3 3/4 months actual. He is on neosure now. He cry's almost constantly he has terrible gas he is always constipated. I have talked to the doctor every week and he refuses to change formula's he says he needs to nutrients and extra calories. He has a nutritionist finally coming to do an evaluation on wednesday (EI took forever to get her the ok to come do the evaluation) anyway has anyone else had these problems? If you have what formula's did you try? Did the nutritionist help? They told me she can call and have the doctor change formula's.