Pop diva Madonna is trying for a baby with her lover, Brazilian model Jesus Luz who is 29 years younger than her.
The thesun.co.uk reports that the singer, who already has four kids, has consulted doctors about conceiving another child at the age of 51.
Madonna already has daughter Lourdes, 13, by Carlos Leon and son Rocco, 9, by ex-husband Guy Ritchie. She has also adopted Malawian kids David Banda and Mercy James, both four.
"She knows that, at 51, it's going to be harder to conceive naturally. But she is Olympic-athlete fit and is ready for the challenge," said a source.
The singer has been with Jesus for more than two years. She met him during a photo shoot in Brazil shortly after she divorced Ritchie.
"Jesus adores her kids but has always wanted a child of his own. He told Madonna that fatherhood would be his greatest adventure, and that he wanted to go on this journey with her," added the source.