I am a confident balck run snowboarder and I wouldn't be going to be honest. Too many people out there who can't ski or board properly and are likely to take you out! As Tan said, even though bubs would be protected pretty well the risk of other injury that could require surgery is fairly high.

It is considered strenous exercise and a high risk activity that isn't recommended during pregnancy however, I would confirm with your OB or GP and if they give you the go-ahead then it is really up to you.