The only thing that isn't recommended (especially if you haven't done them before) are inversions. Inversions are things like handstands where your turned upside down. Other than that...just take it easy. Yoga is great for everyone.
Yes you should...just stretch first and don't over work yourself
So I should be fine? I was scared to start but I really want to do it!
I do both and I still have a happy healthy pregnancy// baby :)