Can conception occur earlier than the last menstrual period?
Conception does not occur earlier than the last menstrual period, and the detailed explanation is as follows:
Conception typically refers to the process of sperm and egg combining. During intercourse, semen enters the female body through the vagina. The sperm then use their flagella to propel themselves forward, eventually reaching the fallopian tubes where they meet and fertilize the egg, forming a zygote. The zygote begins developing in the fallopian tube and moves into the uterus via tubal peristalsis, where it implants into the uterine lining and develops into an embryo. After conception occurs and the zygote forms, hormonal changes take place in the body—particularly increased levels of progesterone—which help maintain the stability of the endometrium and prevent its shedding, leading to the cessation of menstruation. In addition, symptoms such as dizziness and loss of appetite may also appear. Therefore, conception cannot occur earlier than the last menstrual period.
It is recommended that after conception, attention should be paid to indoor hygiene, regular ventilation should be maintained, and room temperature should remain stable. Nutritionally balanced and healthy diets are important; spicy or irritating foods should be avoided, and regular prenatal checkups at the hospital are essential.