During each week of pregnancy, your baby is growing. Here’s a look at what medical terms like embryo and fetus mean in terms of development.

We all start our lives as symmetric balls of cells. In humans, during the first few weeks after fertilization, embryonic ...

A newly created cell model of the amniotic sac could reveal new insights into early pregnancy, as well as generate helpful products for medical use.

Embryonic morphological development is delayed in live pregnancies ending in miscarriage, according to a prospective cohort study from the Netherlands. Among over 600 singleton pregnancies, those ...

Screenshots from the first real-time video of early embryonic development. Fluorescent markers were used to show the movement of the filaments inside embryonic cells.

Abortion provider Planned Parenthood stealth-edited its language about fetal development, now asserting that there is no heartbeat between weeks five and six of gestation. The changes made to the ...

For instance, gastruloid models showed that Huntington's disease can be detected within the first two weeks of embryo development.

Very little is known about the first few weeks of human pregnancy, when development most often tends to go awry. Studying models mimicking these early stages—without the controversy of biological ...

Take a peek inside the womb to see how your belly and your baby develop from week to week with this interactive visual pregnancy timeline from WebMD.