Jamie Lynn's fiance, Casey Aldridge, was "rushed into surgery Sunday to drain fluid from his brain" after Aldridge reportedly crashed his F-150 truck around 1:30 a.m. Sunday morning, according to Radaronline.com.
Aldridge will undergo surgery for what is said to be "a blood clot near his brain" at the University of Mississippi Medical Center.
Casey, 19, was with two male friends who are said to be OK.
Jamie Lynn rushed to the hospital to be by Casey's side.
Casey Aldridge was charged with "careless operation of a motor vehicle," a misdemeanor.
"Cops tell TMZ Casey was driving on the LA 606, which is in the Tensas Parish in Louisiana, when he lost control of his F-150 at around 1:30 AM. Law enforcement sources say Casey was initially taken to the Riverland Medical Facility in Ferriday, LA -- which is right across the border from Mississippi."
Aldrige is currently at the University of Mississippi Medical Center in Jackson, MS for surgery.
According to a close family member, a Baptist preacher, Aldridge did NOT have surgery this morning, but did "suffer mild brain trauma," according to TMZ.
"The family member said Aldridge suffered a skull fracture around his hairline and will be kept at the University of Mississippi Medical Center for 2-3 days for observation."