tubing while pregnant

I would call your OBs office and ask, but my guess is it is most likely safe. Assuming we are talking about floating down the river rather than being pulled by a boat. Load up on sunscreen, your skin is so much more sensitive right now than it normally is. Be sure to bring a few water bottles as well so you don't become dehydrated. Like I said though call your doctor, and clear it with him first, sometimes it feels  like we are bugging him but in reality it is better to ask than to just assume. Have fun.