Mills, who married McCartney last summer (02), has suffered two ectopic pregnancies in the past, which she thought had left her unable to have kids with the former BEATLES star.
The 35-year-old, who is due to give birth later this year (03), told American talk show host Larry King during an appearance on his TV show yesterday (22SEP03), "I went upstairs and he was in a meeting. And I kept walking in and out of the meeting because I had done the test and it was positive.
"And he kept looking at me, thinking, 'She's not normally like this.' And I was going, 'Are you finished yet?'
"And then he came out and I showed him the test and he just went 'Oh', and we both started crying and it was a miracle."23/09/2003 20:02