In the weeks before her tragic death, Anna Nicole Smith was taking so many drugs that she imagined her Svengali-like lawyer Howard K. Stern might be trying to kill her!

That’s the charge of sources, who reveal for the first time the hidden details of the tormented “Playboy” model’s downward spiral of drugs and despair following the death of her beloved son Daniel.

An exhaustive ENQUIRER investigation has uncovered the details of Anna Nicole’s rush toward death – including at least two suicide attempts, regular cocaine use, frequent collapses, and degrading episodes of vomiting and bed soiling.

Obsessed with her weight, she ate little solid food – and, worse, carried the obsession over to her 5-month-old daughter Dannielynn, ordering staff at her Bahamas mansion to underfeed the baby so she’d grow up “slim and sexy,” charge sources.

Anna never got over the death of her son Daniel three days after Dannielynn was born. “She was always crying,” an insider told The ENQUIRER.

An insider even claims they heard her outrageously yell at Howard: ‘I don’t want to see you again – you’re trying to kill me!’

“Howard never used drugs but Anna smoked cocaine every single day.

“She’d smoke the cocaine and 10 or 15 minutes later she would be a changed person, very animated and talking loudly.

“Sometimes she would smoke too much – and took pills to bring her down.”

The insider added, “Many times she was so drugged that she fell, often hurting herself. She frequently vomited on the floor and soiled her bed. She hardly ate, just smoked cocaine and drank fruit juice.”

Pick up this week’s issue of The ENQUIRER for more details on Anna’s death, including an eyewitness account and death scene photos.