If i agreed to a free trader settlement, can I still get half of my husbands pension once the divorce is final?

If you have not signed a Separation agreement yet, then there is no binding separation agreement yet.  I hope that when you say you agreed to a Free-trader Agreement, that it means you have agreed to sign, but have not yet signed.  If so, then you can just file an action in court and ask the judge to divide your marital assets, which will include whatever portion of his pension accrued during your marriage.  Be careful though, because you must file your complaint for distribution of marital property before the divorce is final, otherwise you will lose all rights to have the court divide it.   You should schedule a consultation with an attorney immediately, before you do anything else relating to this marriage so that you do not jeopardize your rights in this matter.