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How is the baby at 12 weeks of pregnancy?

By Zaira Salvador B.Sc., M.Sc. (embryologist).
Last Update: 07/31/2023

The foetus is 5-6 cm long in the twelfth week of pregnancy. It has doubled in size compared to the previous week and weighs about 8-14 g. All its internal and external structures are almost fully formed and are now beginning to mature and function.

In the ultrasound scan of week 12, it is possible to see his arms and legs with his hands, feet and all his little fingers and toes. His face is already very similar to that of a newborn baby, as are his chest, abdomen and back.

 Zaira Salvador
Zaira Salvador
B.Sc., M.Sc.
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.