Women are advised not to have children if they are in a state of alcohol consumption, because the eggs are likely to suffer a loss of quality under the influence of alcohol. In addition, if you get pregnant in this state, there is a possibility that the fetus will be affected in terms of intelligence. Therefore, if you drink alcohol, it is recommended that you do not have sex, and if you do have sex, it is recommended that you use a condom throughout the entire sexual intercourse to prevent pregnancy. In addition, women are advised to quit smoking and stay away from second-hand smoke during the preparation period, so as to have a good birth control. During the period of preparation for pregnancy, it is also recommended to have a health checkup to find out whether there are any diseases that affect pregnancy and whether there are any viral infections that can cause fetal malformations, and then prepare for pregnancy.