1000 gradulupe, suite 380, Austin TX. law library.
If the wife is pregnant, hu*****and can not file petition, he has to wait until the child is born.
The following is the free information in Travis county, other area in TX would be similiar.
http://www.co.travis.tx.us/records_communication/law_library/forms.asp
In TX, if you want to divorce, then nobody can stop you. 60 days is all you need to wait between petition and finalize.