When Pregnant, Use Caution Around Loud NoiseWith all of the musical devices out there you might want to use them sparingly if you're pregnant.
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This article tells more about loud music and how loud noise could affect your unborn baby:
American Academy of Pediatrics recommends that doctors advise mothers who were around loud noises on a consistent basis either because of their occupation or from recreational activities such as attending rock concerts, to screen their babies for noise-induced hearing loss. They point to a handful of studies that suggest that unborn babies can experience ill effects—such as hearing loss—from exposure to loud noise in utero.
excerpted from www.babyzone.com