It is an unscientific statement that 'all women will get pregnant for the first time'. Women of childbearing age who have sexual intercourse without taking contraceptive measures have the possibility of getting pregnant. Pregnancy requires high levels of semen volume, sperm volume, and female egg cells. Sperm can survive for 1-3 days in the female vagina, while egg cells can only survive for one day after being expelled. The ovulation time for women is about 14 days before the next menstrual period, and sexual intercourse within a few days before and after ovulation is possible for conception. Sexual intercourse during non ovulation periods will not result in conception.

If you want to give birth to a healthy baby, both parties should have a balanced diet during the preconception period, stay away from alcohol and drugs, quit smoking, reduce caffeine intake, take vitamins, especially vitamin B, and also consume folic acid appropriately. This can effectively improve male sperm quality and increase female fertility.
If a woman's menstrual period has passed and she hasn't started yet, the first thing she can think of is the possibility of pregnancy. After one week of menstruation, pregnancy symptoms can be roughly detected; If it expires for one month, it is easier to confirm that you are pregnant. Some women, even if pregnant, will go through menstruation, but the menstrual blood is less than usual and the duration is shorter. If the menstrual cycle is normal and sexual activity is frequent, even if contraceptive pills or other contraceptive measures are taken, it is still possible to become pregnant. What are the signs of pregnancy? Changes in appetite, breasts becoming firm and heavy or experiencing stinging sensations, frequent urination, mental fatigue, and frequent nausea and vomiting are all signs of pregnancy. Generally speaking, women who have normal sexual activity and still do not experience menstruation after one week of their menstrual cycle should go to the hospital to have their urine checked to determine if they are pregnant.