It's a girl! (With 95% certainty +/- 3% 19 times out of 20.)
We just found out that Pad Sai is (most likely) going to be a girl. We did not get 100% confirmation, but it's good enough for me. At least we already have a name picked out for a girl. (We were still debating over boys names - and when I say "debate" it's usually me asking if a certain name was good and Maggie saying "NO".) Although I think we can use this name if Pad Sai turns out to be a boy as well. He might need to learn how to fight, that's all..