Good news for Reggie Bush ... the NFL star's wife just revealed she's pregnant with their 3rd kid!
Lilit Bush broke the news on social media in a happy birthday post to Reggie ... complete with a bottle emoji to signify the bun in the oven.
Also, she was out in L.A. sporting the bump -- as seen in recent workout pics with Reggie at an L.A. park.
The couple has 2 kids already -- a 1-year-old and a 3-year-old.
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