What is the first trimester, exactly? The first trimester is the first of three phases (or trimesters) of pregnancy. It's a critical stage in your pregnancy journey and your baby's development. While ...

First-trimester bleeding is not linked to a risk for pregnancy loss, but bleeding with ultrasound dating that is more than 5 ...

Polycystic Ovary Syndrome (PCOS) is a hormonal condition that may raise miscarriage risk, particularly in the first trimester ...

Fetuses of pregnant people who gained excess weight in the first trimester of pregnancy show signs of excess fat distribution in the upper arm and in the abdomen, according to a new study. These ...

After getting that first positive pregnancy test, you may feel a rush of excitement…followed by a surge of nausea, and then the overwhelming urge to take a nap. The first trimester of a pregnancy can ...

Low vitamin D levels in the first trimester of pregnancy are associated with higher rates of preterm birth and decreased fetal length, according to a new study led by researchers in the Penn State ...

Throughout all trimesters, good maternal health, which includes a balanced diet and overall healthy living, positively impacts the baby’s healthy development and enduring cognitive functioning. It ...