Amy Winehouse is in hiding after being ordered to rest by doctors.The 'Rehab' singer - who was rushed to hospital last week after allegedly overdosing - is said to be suffering from "severe exhaustion". Amy's spokesman said: "She is resting under doctor's orders."The representative declined to comment on reports Amy, 23, has checked into rehab to be treated for a drug addiction. Although the singer cancelled a performance with the Rolling Stones in Germany on Monday night, she is still expected to perform at the V Festival this weekend.A festival spokesman said: "We have not been informed by either Amy's record company or her management that she won't be appearing at this year's festival."Unless otherwise informed, organisers are expecting her to appear as planned."Amy's worried father Mitch has reportedly begged her to leave her north London home in a bid to help her quit alcohol and drugs. Mitch is convinced his daughter needs to move away from the trendy Camden area, where Amy is often seen drinking in pubs with new husband Blake Fielder-Civil. Amy's manager Ray has even allegedly visited the star's favourite haunts and begged the landlords to keep an eye on her.