ok

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I think it's a girl...it's a bit 'swollen' as girl's bits tend to be before they are born, but I can see 3 lines.

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I really think that's a girl!

Yes, that is a girl.

looks like a girl

That looks just like my daughter's ultrasound at 16 weeks! I would say you're safe to buy pink!

go shop for pink.
boy bits doesnt look this at 16weeks

I think Girl.

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I really don't see what you're referring to. If you are unsure and want confirmation you can always have another elective ultrasound.

Not sure about the black spaces you mention, maybe just flesh where there's no muscle or bone underneath but is 100% a girly 'hamburger'