Why are you considered two weeks pregnant at conception?

By Zaira Salvador.
Last Update: 04/30/2018

Because the weeks of pregnancy are counted from the first day of the woman’s last menstrual period. Keeping this in mind, technically the woman is not pregnant during the first two weeks of pregnancy. However, fetal development doesn’t start until conception, which occurs about two weeks later (week 4 of pregnancy).

Related post: When Does Week 1 of Pregnancy Start? – Symptoms & Key Facts.

Suggested for you: The First Two Weeks of Pregnancy – Ovulation & Conception.

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