Isn't the honeymoon supposed to come first?

Better stick to the First World and talk to your OB/GYN and perhaps immunologist first. Thailand wouldn't be on my safe list while pregnant because of food and water concerns.

My wife (25 weeks pregnant) and I just returned from a week in Paris and Rome. We were less active than usual, but everything still went well. Definitely invest in some compression socks to avoid blood clots if you will be taking a flight of any significant duration.