No Heartbeat Doppler

Hi po, Me And Wife Went to Our ob today.. Edd nmin may 17,2020. Then 10weeks ndpat sya based sa ultrasound nmin. Today ang monthly checkup nmin then our OB conduct doppler test at di marinig heartbeat ni baby so nalungkot kmi. Sabi nya balik kmi sakanya nov 8 para ma check ulit heartbit.. Possible daw na baka 9 week plng si baby.. Mga ilang weeks ba bago marinig sa doppler ang heartbeat?