Congrats to both of you! I think it's hard to 100% believe the US, esp if they are a bit "don't paint the room", but in general they tend to be correct.
Would you go for a private one to confirm or not sure if you have another scan? I got a private for $39 and def took my doubts away and made me feel very settled with my next little boy arriving. His us pic is on the fridge and makes me smile when I pass it, trying to imagine what this little fella will turn out like.