Your health care provider may be concerned if there’s no fetal heartbeat in an embryo with a crown-rump length greater than 5 millimeters.Īfter week 6, your doctor will also be concerned if there is no gestational sac. If no heartbeat is detected, your doctor will check your fetal measurements. Other reasons you might not hear the heartbeat include: Your doctor may recommend you schedule another ultrasound 1 to 2 weeks later. This doesn’t necessarily mean there’s a problem. Most commonly, this is because it’s too early in the pregnancy. You might not be able to hear a baby’s heartbeat at your first ultrasound. By the ninth week, your baby’s heartbeat should reach 140-170 bpm. Your baby’s heartbeat should be between 90-110 beats per minute (bpm) at 6 to 7 weeks. measure baby’s crown-to-rump length, which can help determine gestational age.

confirm viable pregnancy, and check for non-viable molar or ectopic pregnancy.had difficulty maintaining a pregnancy in the pastĭuring your first ultrasound appointment, the doctor or ultrasound technician will check for the following:.Your doctor may recommend this scan as early as 6 weeks if you: Some medical practices don’t schedule the first ultrasound until between 11 and 14 weeks. What to expect during your first ultrasound appointmentĪfter a positive pregnancy test, your doctor may recommend you schedule an early pregnancy ultrasound scan around 7 1/2 to 8 weeks of pregnancy.

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