So, I have been seeing my gyno due to possible problems with me being able to get pregnant. She told me to start on prenatal vitamins even though we are planning on trying to concieve a few months from now. With all the appointments and blood work and the information/ options constantly discussed in every appointment I totally forgot to ask her if prenatal vitamins cause weight gain? I know I shouldn't worry because if I want to get pregnant I will gain weight, but the fact that she wants me to start them a few months before we start trying and my wedding being a month away,I wonder if it will cause me to gain weight before my wedding day? Does anyone have any experience with taking prenatal vitamins, did they cause weight gain?