Patient's question:
Does implantation cause menstrual cramps? About 8 or 9 days after intercourse during ovulation, my girlfriend experienced menstrual cramps, but it's still several days before her next period. I heard that implantation can cause pain?Doctor's answer:
Fertilization refers to the meeting of sperm and egg in the ampulla of the fallopian tube, followed by the rupture and dissolution of the cell nuclei, forming a zygote. The zygote is then transported to the uterine cavity through the peristalsis of the fallopian tube for implantation. This process is silent and the individual feels nothing, taking about 6-7 days.After implantation, the zygote develops into an embryo. During its growth and development, the trophoblast cells of the placenta begin to secrete a large amount of human chorionic gonadotropin (hCG) to provide nutrients for the embryo's growth. Therefore, pregnancy can be detected through blood hCG tests about 10 days after intercourse. The first symptom of pregnancy is usually a missed period.