Britney Spear tries to kill herself!

Staff at the Promises clinic, where Britney Spears checked herself into last month, has been put on a 'suicide watch', after the singer reportedly tried to hang herself with a bed sheet.

Britney had friends and family worried sick when paramedics were rushed to the clinic recently, and now a friend has revealed that medics were called because she tried to commit suicide.

Just before she tried to hang herself, the pal said, Britney wrote 666 on her shaved head, and ran around the clinic screaming "I am the Antichrist!"

"She is still very vulnerable. Last Saturday she said she had the number 666 written onto her bald head. She was crying, and shouting, ‘I am the Antichrist!' The clinic people just didn't know what to do. Then she started screaming, ‘I'm a fake! I'm a fake!' It must have been really frightening," the News of the World quoted the pal, as saying.

"Later that night she tried to kill herself. She attached a sheet to a light and tied it around her neck. Paramedics were called, but luckily she was unhurt," the pal added.

A source at the clinic also revealed to the paper that Britney had realised what a ‘rock’ her estranged hubby was, and that she not only wanted them to get back together, but also to have another baby.

"Britney has realised what a rock Kevin has been to her, and how out of control she has acted recently. She has been talking to Kevin every night for hours on the phone, telling him she still loves him. She just wants to be with him again, and thinks having another baby will seal their marriage," the source said.

The source insisted that the singer was also much happier and calmer than she was at the time she checked herself into the clinic.

"Britney seems much happier and has calmed down a lot. She's a completely different Britney from the beginning of the week," the source said.

Another source close to Britney said that the singer was now thinking about renewing her vows with K-Fed.

"Kevin has been a real tower of strength for her and she has finally decided to give their marriage another shot. She thought things were over between her and Kevin after his wild partying and gambling," the source said.

"She felt he had deserted her and left her to bring up their two children on her own. She never even dreamed she would take him back. But Kevin's like a different man now. He's never been so caring before, and is really worried about Britney.

"He's been Britney's rock during her difficult time, and she wants to give him another chance. This week she even asked if she could have a night away from the Promises Clinic with Kevin. She's still waiting to hear if they will give her a pass so that they can go out for a romantic meal together.

"Kevin has also taken their two little boys to see their mum in rehab," the source added.

Much to the dismay of her family, friends and fans, the singer's life has been spiralling out of control ever since she dumped Federline last year.

Since then, she has been indulging in wild and boozy parties, been snapped without panties, and the latest shaving of her head and getting tattooed.

The singer also hopped in and out of rehab before seeking help for a third time when Federline threatened to take away their sons if she didn’t get professional help.