The news comes from an exclusive source who assures E! that Fox's recent roundabout replies to questions about her possibly impending motherhood were part of an effort to keep mum on the fact that she is pregnant.
Back in March, she may have also dropped hints during a junket for "Friends With Kids," when she told E!, "I mean, [getting pregnant is] going to happen when it's going to happen, but it's not something that I've planned against or for. I'm just leaving it out there for the universe."
Neither Fox nor Green, who also has a child from a previous relationship, have yet confirmed the report.