If I was in your shoes - I think I would be extremely careful about swinging when you are pregnant - full swap at least. Go to the club and have a great time. You could use this pre-pregnancy time to explore the swinging world. If you do decide to play, I would only do soft swap. There are too many risks (STD's) that could effect your unborn baby if you had intercourse with someone else. But a little soft swap wouldn't hurt, I think. And many men think a pregnant woman is so sexy
By the way - Congrats on your pregnancy
Gosh - I love babies.....
Jenn