The former Hannah Montana star was recently photographed at a medical centre, and stories of a rumoured health crisis quickly spread across cyberspace.
Cyrus insists she was just visiting her doctor for routine blood tests and she was shocked when her fiance, who is currently away shooting The Hunger Games sequel on location, called to check up on her.
She tells U.S. Tv host Jay Leno, "All I did was go get some bloodwork, just go give my blood for something and it's, like, Liam's calling me and (saying) 'Are you in the hospital?'... He was filming Hunger Games."
However, Cyrus is adamant she is not sick, adding, "I'm good. I'm fine."