Divorced finalized 8/22/08, was told cant get alimony if married less 7 yrs,what r my chances?

im deaf & have full custody of 3babies.am stay at home mom for past four years while ex husband worked. i was told i cldnt recieve alimony if married less 7 years.got confused as judge asked if i wanted alimony. under so much stress & lack of information,i said no. after divorce was finalized,was told the information i got was wrong. i want to file for alimony,is it too late?