The `Fight For This Love` singer - who was released from hospital on 16.07.10 to recover from potentially-fatal disease malaria - reportedly burst out laughing when doctors told her to avoid anything that could raise her blood pressure further.
An insider told The Sun newspaper: "Cheryl managed to summon enough energy for a giggle when she was given the news about a sex ban. It`s the last thing on her mind right now. She has also been told to avoid alcohol for the coming weeks."
Since splitting from husband Ashley Cole earlier this year, Cheryl has been romantically linked to dancer Derek Hough and Black Eyed Peas star will.i.am.
Though Derek - who the singer was holidaying with in Tanzania when she is thought to have contracted the deadly virus - has been by her side throughout her ordeal, the music producer has not been seen.
However, it has now emerged that the star has been bombarding his pal with flowers and messages and is now preparing a visit after being told by her mother Joan Callaghan that the Girls Aloud beauty is now ready for company.
The source continued: "will.i.am has been phoning Joan and Derek non-stop to find out how Cheryl is. He`s also sent the most beautiful bunches of flowers. He`s been desperate to see her but she hasn`t been up to having visitors.
"As soon as Joan said she was a lot better, he wasted no time arranging a visit. A load of people want to see her now she`s recovering well, including her Girls Aloud bandmates."