Is this a normal ultrasound ?

For being 5 weeks ? I've seen a few with a tiny speck which is supposably a baby but when I got my ultrasound my obgyn told me " there's a baby house " 
my husband : so for sure we know theirs a baby in there 
obgyn: not exactly, that's the baby's house but the baby hasn't moved in yet 
Idk if I should be worried, when will the baby move in ? with my first I had an ultrasound at 8 weeks and there was a baby not so little but there was a baby i'm so confused and sad 

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