Group B streptococcus is a type of bacterial infection. This bacterium naturally lives in the gastrointestinal tract. GBS is common and is in 10%-30% of pregnant women. Once you have this bacterium, it does not mean you will always have it, and it can come and go. Most women with group B strep do not experience any symptoms, and usually, this is not a big deal. However, it can create some complications for you when you are pregnant and cause some severe complications if you pass it to your baby. In the United States, it is standard practice to test all expecting mothers in week 36 or 37 for group B strep. This episode covers what is involved in the testing, how to treat group B strep, and how you can reduce the risks to your baby. This episode also explores the evidence on whether you can decrease your risk for group b strep during pregnancy.