Kim Kardashian Fears Kanye West Fathered Secret Love Child During His 'Dirty-Dog Past'

Kim Kardashian is desperate to give her daughter North a sibling, but has the reality star's baby daddy Kanye West already taken care of that by having a secret kid with another woman?

"Kanye glosses over his dirty-dog past, but he has a long list of former conquests — including groupies, exotic dancers, students video vixens and cocktail waitresses," a source told OK!.

Now, "Kim is obsessed with the idea that there's a child out there who's going to come after his fortune."

Another reason for so much anxiety? Kardashian, 34, is terrified that her hubby's ex, Amber Rose, will tell all West's secrets  in a memoir coming out later this year.

Rose, 31, certainly has the motivation to spill the beans on her 37-year-old rapper ex. Rose has claimed that she and Kanye were still together when he and Kardashian started hooking up, and she recently slammed the reality star's sister, Kylie Jenner, for dating a much older man.