Octomom -- Back on Welfare

It's only been five months since Octomom got off welfare, but TMZ has learned the honeymoon's over for your tax dollars -- because she's back on government assistance.

Sources close to Octo tell TMZ, Nadya Suleman signed up for welfare again this week after her October rehab bills devoured most of her savings.

We're told the mother of 14 will be getting $1,800 a month for food, $1,000 for emergency cash, as well as Medi-Cal benefits to help with mental heath and dental issues.

According to sources, Octomom only plans to use the welfare money while she gets back on her feet -- or on her back.