What Is the First Trimester of Pregnancy? The first trimester is the earliest phase of pregnancy. It starts on the first day of your last period -- before you’re even actually pregnant -- and ...

Working out during pregnancy is good for you and your baby. Here are the best exercises to do during each trimester.

Low vitamin D levels during the first trimester of pregnancy are associated with higher rates of preterm birth and decreased fetal length.

Feb. 3, 2025 — Maternal vitamin D levels in the first trimester were related to both prenatal growth and pregnancy outcomes, according to a new study. Low vitamin D levels during the first ...

Pregnancy is a beautiful experience, but it can be uncomfortable too. One of the many discomforts of pregnancy is morning sickness, a term that refers to the all-too-common queasiness that can ...

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.

Adverse pregnancy and neonatal outcomes are increased ... Propylthiouracil is recommended to be used during the first trimester and switch to methimazole is recommended thereafter to reduce ...

Maternal vitamin D status in early pregnancy is crucial for fetal growth and may reduce the risk of preterm birth, according ...