Second trimester
Learning Center
Prenatal care: Second trimester visits
Prenatal care helps support a healthy pregnancy. Here's an overview of second trimester visits.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Fundal height: An accurate sign of fetal growth?
Understand how fundal height is measured and what it means.
Fetal development: The 2nd trimester
Fetal development progresses rapidly in the second trimester. Check out the weekly changes.
Different types of COVID-19 vaccines: How they work
Find out how different COVID-19 vaccines cause your body to create antibodies that will fight the COVID-19 virus.
Ankylosing spondylitis
Learn about this inflammatory disease that can cause some of the vertebrae in the spine to fuse over time.
2nd trimester pregnancy: What to expect
Second trimester pregnancy often brings welcome relief from nausea, breast tenderness and other pregnancy symptoms.