Is anybody on here having twins? I haven't spotted any yet. Usually there are 2 or 3 sets on these type of birth boards!
I haven't had an u/s yet. But I'm quite certain there's only one in there. Although while I was pgn with DD we got a u/s to rule out twins since I was measuring 7 weeks ahead at 21 weeks. But I think it was more an excuse since DH really wanted a u/s. I don't think we really thought it was twins since I had been quite small up until then.
On my last birth board, someone did find out at their 20 week ultrasound that they were having twins, so it might happen. Although, I think you're right Heather - most of us have had an ultrasound at this point.