I think it's best left as a surprise especially for number #1. I don't know what I'm having and I'm really looking forward to DP saying "It's a BOY!" or "It's a GIRL!"

I didn't find it hard to decorate the nursery, it's all neutral with a Winnie the Pooh theme which can go for either a boy or a girl. I haven't worried about too many clothes yet as I know family and friends will buy once baby is born.

I like the element of surprise. And it keeps everyone guessing as well and it's fun to hear what people think based on those old wives tales about how you're carrying, what your eating, etc. Adds a bit of fun to the pregnancy.

However, if you are dead set on having a boy or having a girl, then I would find out as it would give yourself time to adjust to the news if it wasn't what you had hoped.