US report: Is Jen Garner having baby number four at 46?

Jennifer Garner has waited three years to finalise her divorce from Ben Affleck, but the actress has officially parted ways with her ex.

Now, OK! USA has claimed Jen's friends are buzzing that she's pregnant with baby number four. 

Though her rep has denied it to the publication, insiders allegedly tell OK! that the actress unexpectedly conceived a child with her new beau of several months. 

"This is the perfect way for Jen to start over," a source says. "Jen thinks its a sign - and a miracle." 

Jen already shares three children with Ben - Violet, 13, Seraphina, 9, and Samuel, 6. 

OK!'s source adds that despite Jen only being a few weeks along, she has already given Ben the heads up. 

"Ben congratulated Jen and wanted to show his support, especially after the way she stepped in to help during his fall from grace," a source says, explaining that Jen dutifully ushered Ben to rehab in August after a sobriety relapse. 

"Jen and Ben have always reassured each other that they'll always be family for their kids' sake.

"Jen's relieved she feels it's better to have Ben on her side in this. And now she can move forward and feel truly excited about the future."

Jen has not responded to OK!'s report.