This is an odd question, but this is the first time I have ever been pregnant, and I keep changing from being constipated to having diarrhea. I know this is a personal question, but I could not find anything online. Is this normal? I know constipation is due to the prenatal vitamins and my body slowly digesting food to give the baby nutrients, but I am very unsure why is it changing so much. One week I'll be constipated and the next the complete opposite. Anything will help, tips, or even if you had this problem. I just don't know if it is normal or not.