Things to note before pregnancy 1. Physical examination and nutritional supplements Before pregnancy, women need to undergo a comprehensive physical examination to ensure that they are in good physical condition. In addition, some nutritional supplements, such as folic acid, vitamin D, etc., should be supplemented to enhance physical health. 2. Quit smoking and drinking. Smoking and drinking have a serious impact on the development of the fetus, and may even cause malformations and other problems.