Sources at the hospital, where she is consulting a doctor for her pregnancy, reveal that Rao was admitted on May 31 for fever.
"She was admitted to the fourth floor of the old hospital building. She was in the hospital for a week, " said a source, on the condition of anonymity.
"During the hospitalisation, Aamir would visit her everyday. He used to come in late at night, after 9pm. It was obvious that he did not want any attention.
During the week-long hospitalisation, the cause for fever could not be diagnosed, but it was treated. At the time of discharge, the pregnancy was normal and there was no reason to worry," he added.
Aamir was earlier married to Reena Dutta and has two children with her Junaid 16 and Ira 11. He married Kiran on December 28, 2005, after he divorced Dutta in December 2002, after 15 years of marriage.