Candace Parker says she and her wife have a baby on the way ... revealing Tuesday her partner, Anya Petrakova, is pregnant!!!

The WNBA superstar shared the awesome news on her social media page ... gushing over Anya on their wedding anniversary while calling the pregnancy "surreal."

"I LOVE YOU🐞," Parker said in a message to Petrakova. "I appreciate you, I value you and what we have."

"We've always dreamed of growing our family...," Parker continued. "It's surreal that we now have a baby on the way!"

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