I would go. Though I'd be inclined not to take any silly risks due to the little traveller. Maybe steer clear of the black diamonds and just enjoy a leisurely ski on the easier slopes

Just be careful as you'd probably fatigue a lot easier then when you're not PG. I haven't been skiing when PG (due to financial reasons more than anything) but I did notice when I was doing my regular pilates or when I went to gym I had to cut it back a bit as my muscles got sore quite quickly.