PHOENIX -- Thomas Beatie, who became famous as the first man to give birth, and his wife Nancy have separated.

Beatie revealed the breakup during a taping of the syndicated TV show "The Doctors."

"Like all marriages, we have our ups and downs, and we're going through a rough patch right now. At the moment, we're separated," he says on the show, slated to air May 9, reports

Beatie also said he had undergone a final female-to-male gender reassignment surgery, but his wife hadn't been privy to that. "Nancy hasn't seen the new me yet," Beatie, 38, says.

Beatie began life as a woman and legally switched to a male identity, making headlines in 2007 when he became pregnant. Nancy, 49, had two children from a previous marriage but was no longer able to get pregnant following a hysterectomy. The couple have since had two more children.