Patient's question:
How long does it take for sperm to combine with an egg after ejaculation and for fertilization to be successful? Is it usually a few hours or more than a day?Follow-up question 1: Hello, I want to know approximately how much time it takes, or the fastest number of hours, and the slowest number of hours.
Follow-up question 2: My ultrasound result on the 20th of this month showed pregnancy at 32 days. I had intercourse on the 11th of last month and again on the 18th of the same month at 7 PM. However, on the 18th, I took some medication, so I'm a bit worried. I don't know if the baby was conceived on the 17th or the 18th.
Doctor's answer:
??????After ejaculation, most of the semen is released into the bottom of the vagina and the cervix opening. Within a few minutes, sperm enters the cervical canal. About 30 minutes later, sperm appears in the fallopian tubes. Inside the female reproductive tract, sperm can survive and maintain viability for approximately 2-3 days. The egg released by the ovary retains its fertilization ability for about 12-24 hours, but the fertilization ability of sperm to combine with the egg is only 1-2 days. The egg is fertilized in the ampulla of the fallopian tube, and then the fertilized egg slowly moves within the fallopian tube, taking 3-4 days to enter the uterine cavity. If you want to get pregnant after sexual intercourse, it is recommended to try pregnancy during the ovulation period. After ejaculation, place a pillow under your buttocks and elevate your buttocks for half an hour. This increases the chances of getting pregnant. About 14 days after sexual intercourse, go to the hospital to check blood HCG to see if you are pregnant.