As Life & Style exclusively reported last week, Khloé Kardashian is pregnant with Lamar Odom's child — but that hasn't stopped the former NBA player from threatening to expose her family's secrets!

According to a source, the 36-year-old has considered writing a tell-all, which a publishing insider claims could net him a whopping $5 million advance.

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"He's been losing his temper a lot lately over his in-laws," the source tells Life & Style. "He believes he was a huge star before the Kardashians ever were, and they took down his career."

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But as the estranged duo's divorce moves forward, all Khloé can think about is Lamar's recent partying. "Khloé is trying her best to get on with her life, but nothing anyone says or does is making her feel better," the source shares. "She fears Lamar won't be able to cheat death twice."

For more on Khloé’s pregnancy, pick up the latest issue of Life & Style, on newsstands now. And scroll through the gallery below for a look back at Khloé and Lamar’s cutest photos!