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How long after intercourse does conception occur?

By Zaira Salvador.
Last Update: 11/29/2018

Fertilization can occur only after the egg leaves the ovary and hits the Fallopian tube. Thus, the woman is on day 14 of the menstrual cycle approximately. Even though sperm can stay in the female reproductive system for up to three days, the egg cell has a lifespan of just 24 hours after it is released, which means that fertilization can take place only within the first 24 hours after fertilization. However, intercourse may have occurred between 2 and 3 days before.

To sum up, the fertilization process can take several hours, although the length can vary from case to case, so giving an exact figure is complicated. Generally, it occurs within 19-24 hours.

Suggested for you: What Are the Steps of Fertilization in Humans?.

 Zaira Salvador
Zaira Salvador
BSc, MSc
Embryologist
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV
Embryologist. Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI) License: 3185-CV.
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