Autumn Crittendon of "16 & Pregnant" fame has died -- and it sounds like there were some health problems her family was aware of ... TMZ has learned.
The MTV star's sister broke the news on Facebook Sunday -- penning a heartfelt message to her late sibling ... which has since been deleted. However, a source with direct knowledge has given us a bit more insight into what happened.
We're told Autumn passed away Saturday at a home she was living at with her kids, her mom and her stepdad in Henrico County, Virginia. Our sources say her mother and stepfather found her unresponsive in her bedroom, after a friend notified them that something was wrong. Paramedics then arrived and attempted to render CPR.