When does the heartbeat come in pregnancy?
The fetal heartbeat usually begins to be detectable by ultrasound around 5 to 6 weeks of pregnancy. At this time, cardiac tissue starts to contract and may sometimes be seen using a transvaginal ultrasound. In summary, fetal heartbeat is generally first detectable by ultrasound at about 5 to 6 weeks of pregnancy and more reliably seen by 7 to 8 weeks.
