Is it possible?

Hello mga mommies ask ko lang is it possible na magkaheartbeat pa si baby? Based on my last LMP dapat 8weeks and 2days na ko pero sa TVS sabi 5weeks and 6days palang daw laki ni baby baka daw nagstop sya sa pag growth kasi almost 2weeks behind sya sa LMP ko.. with gestational sac , yolk sac and embryo but no heartbeat ?? please sana may same experience saken na nabuhay pa rin baby ?