It is inevitable that you will get sick during the preparation period, and when you get sick, you also need to take medication. However, during the consultation process, you must make it clear to the doctor that you are in the preparation period and the medication used should preferably be one that does not cause any malformation to the fetus and has no effect on the pregnancy. Especially in the second half of the menstrual period, you should be careful with the medication, because it is likely that ovulation has already passed, and if you have intercourse during ovulation, you are likely to be pregnant, so you should be more careful. And there are some drugs that should never be taken, such as anti-inflammatoryloxacin, haloperidol, and fluconazole, which may clinically cause fetal malformations. Therefore, it is important to communicate with your doctor and avoid drugs that can cause fetal malformations in order to achieve the goal of clinical eugenics.