You can hear your baby's heartbeat thru a doppler at 12 weeks. Your OB usually checks the hearbeat every check up. If you plan to do it at home with your own doppler, you need to know how to locate where to listen for the baby's heartbeat. How you will locate it will base on the baby's position in your belly. I'm just concerned na baka mahirapan kayo mag locate ng heartbeat on your own and ma praning kayo. By the way, ultrasound has no radiation because it uses soundwaves.
pauline faina