Fertilization just after ovulation (usually before menstruation 14 days) has the best quality of pregnant eggs. Because eggs age quickly, they lose their vitality after 48 hours. If the aged egg is fertilized, it is easy to have spontaneous abortion, even if it is barely pregnant, it is also easy to have congenital malformation.
Ovulation day
If your period is 14, this month's 1 (1 ~ 2 days) is the ovulation day. Ovulation test paper can also be used to accurately determine the ovulation date.
sex life
Being able to have sex on the day of ovulation is more likely to give birth to a healthy and intelligent baby.