The magazine claims Nicole rushed herself back into rehab after announcing to close confidantes: “I’m pregnant!�

That’s the secret behind the 83-pound reality TV star’s decision to get help for an eating disorder and drug abuse….

NE reports that Nicole went to rehab after she took a home pregnancy test that came back positive, according to an insider. She then broke the news to Joel, 28.

Joel told her to get into rehab immediately. And he warned “that if she didn’t go into rehab and get healthy for the baby’s sake, he would dump her and never look back,� said the insider.

Nicole Richie has denied claims of returning to rehab.

Excerpt celebitchy.com