The divorce is correct as the consensus of scholars that the divorce while in pregnancy is valid and correct.

You are at Iddah until you deliver your child. The minute you delver, you
become a stranger to your husband.

You should spend your Iddah at the house of your husband.

I have been divorced, 2nd divorce and I came to know that I was pregnant. How is my Iddah period going to be?

Waiting Period of widow or divorcee | February 18, 2014 6:31 am
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Some one told me that Iddah for a divorced woman is 3 menstruation periods, since I am preganat my iddah will start after delivery during my menstruation period but for now am not in iddah until I deliver, how true is this?
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What’s the iddat period for a wife whose husband had passed away?