While it is likely that fetal Dopplers are safe, medical consensus recommends against using them at home, according to the maternal fetal medicine experts at BabyCenter. Because the sounds of a baby's heartbeat are so difficult to correctly recognize, it would be easy to miss a problem using a Doppler.
The experts at BabyCenter recommend that pregnant women pay attention to their baby's movements once they can be felt. If a woman notices any changes in the baby's movements, a doctor or a midwife should be called right away.
The experts at BabyCenter also recommend that a woman consult with her doctor or her midwife if she is considering purchasing a fetal Doppler, and be sure that the package for the Doppler indicates that it conforms to FDA safety standards.