my daughter is now 6 weeks old and has been constipated since she was about 2 weeks. She had been having very regular bowel movements on her own up until then. I breast fed in the hospital and for about a week after i came home. We then put her on Enfamil Lipil concentrate (ready to use) for about a week then switched her to the powder form. Once we put her on the powder she began to get constipated. her doctor switched her to similac advance which did not work. So they switched her to Enfamil Gentlease. She did have a couple bowel movements on her own but im not sure with the gentlease but they still switched her to enfamil Prosobee which still didnt work and now she is on Similac isomil advance and she is still not having bowel movements on her own. Ive given her prune juice and put karo syrup in every bottle which has softened her bowels a lot but she just will not have a bowel movement on her own. we have to give her a suppository in order for her to have a bowel movement. She is scheduled to have a barium enema to determine whether she has Hirschsprung's disease or any other complications with her intestines. Im very concerned and im not sure what the problem may be. Any advice?