Nub? Help Appreciated.

I hardly hang around here, but lately been lurking through some confirmed nub pics as my first scan is in less than 3 weeks.
And that definitely looks like the classic girl nub, i.e three lines.

Anyone else who's more experienced to guess?

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Thanks! I was told they have to say that they can never be 100% sure - I just hope they are right as I've bought pink already. I get my hospital scan very soon so hopefully they will confirm for sure.