Fluid on the skull on a 9 week ultrasound

I had an ultrasound today at 9 weeks.  Everything was normal.  Heartrate 179 and everything measuring right on at 9 weeks but the doctor called and said they found fluid between the skull and skin.  I really haven't been able to find anything online that describes that.  Any information would be greatly appreciated.

[Beccabb]

I don't know much about fluid between the skull and skin but I don't know how much this differs my friend had a baby 9 months ago n he had fluid on his brain they found that quite early on too kept there eye on it with MRI scans but everything turned out fine, Sorry it's not exactly the same as your situation