Glad to hear you had a fantastic time in Vegas ms.fashionista
kmroboto, I think 16 weeks is a bit too early to tell, the degree of certainty associated with the baby's gender gets much better from week 19 or 20 onwards.
I had an ultrasound yesterday (15 weeks, 1 day), it was more of a routine ultrasound to make sure everythign is OK because of my hypertension. I asked the ultrasound tech if she could tell the gender even though I knew what her answer would be

but she did say that if she had to guess then she'd say it was a boy because it did look like there was male hardware there... I won't find out for definite though until my 20 week scan... sometime in the first week of May as I haven't actually booked it yet.
Hope everyone is doing fantastic!!!