I would not bring up the subject of your pregnancy. It's personal information and you don't want to take the chance that the adcoms will "frown" on it.
Spacecadet, one of our members, got accepted to Baylor and then deferred for a year. She delivered her son in the Fall!
Hang in there, and congratulations!
Theresa
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"All you have to decide is what to do with the time that is given to you."