My ex-husband helped get me to the U.S.A. He now wants a divorce and I'm scared my papers will be taken and I will he sent back to my country.

Have you received your green card? If so, a divorce will not result in a loss of your permanent residence. Even if you are a conditional resident, you could still seek to remove the conditions even if divorced. As long as the marriage was entered in good faith, a divorce will not cause a loss of status. You can read more about removing conditions at http://myattorneyusa.com/seeking-waiver-of-joint-filing-requirement-of-uscis-from-i-751.