What was the instrument used by your OB to detect the heartbeat? If you went for an ultrasound then it’s possible you have a blighted ovum pregnancy. If your doctor used a Fetal Doppler, then it’s possible that your pregnancy is too early to be detected by a fetal doppler. Especially fetal doppler can normally hear baby’s heartbeat 13 weeks or 14 weeks above.
Claudine Tecson