Ob gyn 10 weeks

First i want to say that when i was 8 weeks i went to my 1st ob appt and was told that there was a sac and a yolk no.embryo they sent me for an emergency sono at a more high tech place and the tech confirmed i was actually 7 week s exactly and i heard my babies heartbeat for the first time..My heart was happy because my baby was indeed working hard 2 become a growing fetus.now second appt and again send me for an emergency sono and it turns out..This time it was confirmed my baby never continued after my last appt and although i still have all my pregnancy symptoms.Their is no life to my child..so sad..What will i tell my 7 year old who was so.excited.