Elizabeth Edwards

Elizabeth Edwards says her relationship with husband John Edwards is "complicated" and she has "no idea" if he fathered another child in a new interview with Oprah Winfrey — her first since the senator acknowledged having an affair.

"Neither one of us is out the door, so I guess it's day by day, but maybe it's month by month," says Edwards.

Asked if she's still in love with her husband, Edwards — who's battling terminal breast cancer — replies, "You know, that's a complicated question."

While John Edwards didn't confirm reports of an affair with videographer Rielle Hunter until last August, he confessed to Elizabeth in 2006 during his second presidential run. He has denied paternity of Hunter's daughter and has offered to take a DNA test.

Asked about the speculation, Elizabeth says, "I've seen a picture of the baby. I have no idea. It doesn't look my children, but I don't have any idea."

The full interview will air on Oprah on Thursday.

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