Implantation is the process when a fertilized egg (blastocyst) attaches to the uterine lining, marking the beginning of pregnancy. This process typically occurs between 6 and 12 days after ovulation, most commonly around day 6 after conception

. The implantation itself takes place over several days as the blastocyst burrows deeper into the uterine wall, generally spanning about 1 to 5 days for the embryo to fully stick to the uterus lining

. The entire timeline from ovulation to completed implantation can vary depending on individual cycles but usually falls within this window. To summarize:

• Ovulation occurs around day 14 in a typical 28-day cycle.
• Fertilization happens within 24 hours after ovulation.
• The fertilized egg travels through the fallopian tube to the uterus over about 3 to 4 days.
• Implantation begins roughly 6 to 10 days after ovulation and can take 1 to 5 days to complete.
• Overall, implantation is usually completed between days 20 to 24 of a 28-day cycle

This means implantation is not instantaneous but a gradual process lasting several days after the fertilized egg reaches the uterus.