There is no such thing as a second pregnancy.
Generally, a woman who is in the stage of pregnancy does not experience the symptoms of another pregnancy. Pregnancy is usually defined as the combination of sperm and egg, which results in the formation of a fertilized egg and successful implantation in the uterus. Even if a woman has sex during the pregnancy stage and the sperm enters the body, it is unable to combine with the egg cell to fertilize it, so she will not become pregnant again after pregnancy.
After a woman becomes pregnant, she should avoid having sex during the first and second trimesters of pregnancy, mainly to prevent any effects on the fetus. Having intercourse in the first trimester may increase the chances of preterm miscarriage, and having intercourse in the second trimester may increase the chances of preterm labor.
It is recommended that pregnant women should have good living habits during the pregnancy stage, maintain a regular and nutritious diet, eat more protein and vitamin-rich foods, and undergo regular maternity checkups.