Pregnancy can be achieved by taking oral daidzein-35 and stopping the pill for 3 months. There is no clear research evidence that the estrogen and progesterone in birth control pills pose a risk to embryo development. Moreover, birth control pills themselves have no effect on fertility, but rather have a good regulating effect. However, it is recommended that you must do the appropriate tests before planning to get pregnant, such as doing physical health checkups and ultrasounds to find out if there are any diseases that are not suitable for pregnancy. Oral folic acid tablets are recommended, mainly for the prevention of fetal neural tube malformation.