Congratulations on the upcoming blessed event I am excited for you! I can see your dilema, but I have not been pregnant with an ostomy. There are people on the Chron's Forum who might have some info! Will you post your question there, too? Maybe you will be able to get an answer! I would be interested to know, too!
Yes, many women have gone through childbirth with an ostomy. If you jump over to www.j-pouch.org you can ask this question on that board. I know that one poster, Janna, had a baby last year and she has a permanent ostomy.