Pregnancy cannot occur without intercourse. Pregnancy can only occur if sperm reaches the vagina during intercourse, passes through the cervix to the uterine cavity and then to the fallopian tubes, where the egg and sperm can unite and develop into a fertilized egg. If intercourse and substantial sex does not occur and the man does not ejaculate sperm into the woman’s vagina, it will not lead to pregnancy, leading to pregnancy without intercourse. IVF is the development of eggs and sperm outside the body to a certain embryonic level, then transferred to the uterine cavity for implantation, growth and development, and pregnancy will occur in women, also known as in vitro fertilization. It is a surgical treatment method to select high quality embryos for women with blocked fallopian tubes, good intrauterine environment, the presence of anti-sperm antibodies, and men with poor sperm quality and high malformation rate, for both men and women with infertility factors.