(If you've had a group B strep urinary tract infection during this pregnancy, you won't need this test because even though the infection was treated, you'll automatically get antibiotics during labor. If your test is positive, you'll be given antibiotics during labor to help keep you from passing it on to your baby. If it turns out your baby is breech, you may be offered an external cephalic version, which are maneuvers done to try to turn your baby into a vertex (head-down) position.īetween 36 and 37 weeks, your practitioner will swab your vagina and rectum to check for a common infection called group B strep. Your doctor may also order an ultrasound if they aren't sure about your baby's position from an abdominal exam. And if you have a high-risk pregnancy, your doctor may also order a third trimester ultrasound to do a biophysical profile (BPP) test, where they'll examine your baby's movement and fluid level. If your baby is measuring too small or too big, your doctor may order a third trimester ultrasound to evaluate their growth and your amniotic fluid levels. So, if you're 37 weeks, your fundal height should be around 37 centimeters. At this stage, the measurement should match the number of weeks you're pregnant. Your doctor will also evaluate the baby's heartbeat using a Doppler and measure the fundal height (the distance between your pubic bone and the top of your uterus).

Some practices have you provide a urine sample to screen for protein, sugar, and infection.

Like your previous prenatal appointments, you can expect to get your blood pressure and weight checked. What happens at your third trimester appointments? After all, there's a chance your doctor won't be available when you give birth. In some practices where multiple practitioners share the on-call pool, you may make your rounds to get to know everyone as your due date draws near.

Frequency of prenatal visits