Hi mommy! Congrats sa pregnancy mo! Honestly, a few of us in my mom group have asked our OBs about this kasi ang dami ng affordable doppler online ngayon, and most doctors actually recommend avoiding daily use, they say ultrasound, even handheld ones, is best done by professionals para sigurado na safe ang frequency at duration, especially pa lang kayo sa early weeks. Best talaga to ask your OB directly about it, kasi sila ang makakaadvice based sa your specific pregnancy!