What's Going On in There?

You're probably wondering what that baby looks like that's growing inside of you. Even if you've seen an ultrasound (or sonogram) image, it's hard to get a sense of what's really going on in there. The following video shows how a baby develops from week to week:

The following link from WomensHealth.gov shows more images and describes how the baby is developing at 4-week intervals. For example, at 12 weeks, a baby is able to make a fist. At 20 weeks, eyelashes and fingernails have formed, and the baby is able to hear. He or she should be able to recognize your voice at birth because it's been playing in the background for many weeks!

• Stages of pregnancy

Even more detail is given in the following links from the Mayo Clinic, which provide a week-by-week guide to a baby's development:

• Fetal development: The first trimester
• Fetal development: The second trimester
• Fetal development: The third trimester

Sources:

• Mayo Clinic. (2011). In-depth: Pregnancy week by week. Retrieved from http://www.mayoclinic.com/health/pregnancy-week-by-week/MY00331/TAB=indepth
• WomensHealth.gov. (2010). Your developing baby. Retrieved from http://www.womenshealth.gov/pregnancy/you-are-pregnant/stages-of-pregnancy.cfm#d