A fetal heartbeat may first be detected by a vaginal ultrasound as early as 5 1/2 to 6 weeks after gestation. That's when a fetal pole, the first visible sign of a developing embryo, can sometimes be seen.
normal pa rin po ba ung at 18weeks nd mo mafeel ung hearbeat when you try to feel it with ur palm
6 to 7 weeks
7 weeks.
Ayn Nepomuceno