Hello ladies! I need some help. My baby is 4 months old since he was born he was in similac but then changed it to enfamil because he would get constipated. So now being on enfamil he has watery (literally) diarrhea. Is there a certain type of milk that he should be on. The dr put him on probiotics but he tried it one Time and he puked it right back up! Is there any suggestions of any other milk I can try!