Constipation relief??

Hi ladies! Hopefully I'm not alone in this but is anyone else suffering from constipation?? I've talked with my doc and they say Metamucil daily, high fiber, healthy foods and no fried food. They also said if it gets really bad- which it has- to use milk of magnesia. I'm really trying to avoid taking the milk of magnesia because I think it's so unhealthy for the baby. Have any of you found any methods that really keep things from backing up???