depend on the weeks from 7 to 10 weeks the heartbeat is high in range 150 -190 at nine weeks, it reach the heighest. after 10 weeks, it drops, after 13 weeks it will in range 130 -165 before delivery it will drop to 120-160. the heart beat predict gender is believeable after 12 weeks expeciall before delivery . commonly after 13 weeks if your baby heart beat below 130, should be a boy and if higher than 170, should be a girl
【在 i******t 的大作中提到】 : depend on the weeks : from 7 to 10 weeks the heartbeat is high in range 150 -190 : at nine weeks, it reach the heighest. : after 10 weeks, it drops, after 13 weeks it will in range 130 -165 : before delivery it will drop to 120-160. : the heart beat predict gender is believeable after 12 weeks expeciall : before delivery . : commonly after 13 weeks if your baby heart beat below 130, should be a : boy and if higher than 170, should be a girl