Donald Penn's wife isn't happy -- and who can blame her?

According to a new report, the Oakland Raiders player has gotten a woman pregnant, and that woman is not his wife. Instead, Camilla Poindexter, who has starred in a handful of seasons of Bad Girls Club, is said to be Penn's new baby mama.

"My husband cheated on me with this hood rat," Dominique Penn wrote on her Instagram page after learning the shocking news, via Black Sports Online. "She knew he was married from jump!! He knew that he was married! They did this to my family! You don't get brownie points for f***ing a married man for a check thinking he was gonna leave his wife!"

Poindexter gave birth to a son in March and Dominique is convinced that her husband is the father. Meanwhile, Penn and his wife already have three kids of their own.

"He has 4 kids now (paternity test pending) to worry about," Dominique wrote.

Although Dominique is understandably upset with her husband, she doesn't seem to be planning for a divorce. In fact, she wished him well in yesterday's game.

"My husband married a strong woman, and even at his weakest points today, I encouraged him to go play [on Sunday]! I uplifted him and I told him as his friend were gonna get through this!!! As a result to all you hoes out there, never think for one second a man will never come crawling back to his wife. In most cases like mine, THE WIFE ALWAYS WINS," she concluded.

Meanwhile, sources close to the reality star told TMZ that Poindexter is not trying to shake anyone down for cash. Instead, she simply wants Penn to support their child.