Pillow pads are still helpful in getting pregnant. It is important to understand the process of sperm-egg union. The egg is discharged from the ovary and enters the fallopian tube through the umbilical end of the fallopian tube where it waits for the arrival of the sperm. After the semen enters the vagina the sperm leaves the semen and enters the fallopian tube via the cervical canal and uterine cavity where it meets the waiting egg, which is the whole process of fertilization egg formation. After padding the pillow can help the sperm leave the semen and enter the uterine cavity, so it is helpful for pregnancy. Thirty hours after fertilization, the fertilized egg moves towards the uterine cavity with the help of the peristalsis of the fallopian tube. About 6-7 days after fertilization, the whole process of implantation of the embryo into the endometrium is called implantation, which is intrauterine pregnancy.