After preparing for pregnancy after the women pad pillow can generally 20-30 minutes on it, padded pillow theoretically can prevent semen outflow, help improve the chances of conception. After having sex, women can use pillows to cushion their hips, which will help prevent semen from flowing out and allow semen to stay in the vagina for a longer period of time, increasing the amount of sperm in the uterine cavity and helping to improve the chances of conception. However, this is only some of the tips of cohabitation, in the preparation for pregnancy need to further improve the preparation for pregnancy check, exclude some genetic factors or pathological factors. At the same time in the pre-preparation period, it is recommended to take folic acid, to prevent fetal neural tube malformation, and pay attention to a good diet and nutrition, do not stay up all night.