Doctors made the discovery through scans days after the crash, but the 28-year-old former Playboy model has since recovered.
"They told her to take it easy and chill out for a couple of weeks, but she is fine," a source told E! News Wednesday. "There is nothing to worry about."
Wilkinson-Baskett is married to professional football player Hank Baskett.
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NBC reportedly holds celebs hostage to Jimmy Fallon's show