"All pregnant women should get a group B strep test when they are 35–37 weeks pregnant. Babies can get very sick and even die if their mothers pass group B strep bacteria to them during childbirth.
If you are pregnant, talk with your doctor or midwife about getting a group B strep (GBS) test. CDC recommends getting it when you are 35–37 weeks pregnant. The test shows if you are carrying group B streptococcal bacteria, which you can pass to your baby during childbirth. If you carry this bacteria, you need an antibiotic during labor to keep your baby from getting sick..."
Group B Strep