These types of cases are very tough under current immigration law and that's why you haven't received much optimistic news. As the law stands now, if you entered the country illegally and stayed for more than 180 days you are barred from obtaining legal status for 3 years. If you stayed illegally for more than 1 year you are barred from obtaining legal status for 10 years. If you are married to a U.S. citizen you would be considered an immediate relative of a U.S. Citizen and therefore would qualify for immediate lawful permanent residency. However, to obtain LPR status you would have to return to your country and the 3/10 year bar would apply. There are waivers available for this bar but they are difficult to obtain and there is no guarantee. We all hope that the law will change in the future to help people that are you in your situation, but right now it is very difficult.
There is one option that leads to US citizenship. Under current statute and presidential order, persons who serve in the US Armed Forces in a combat zone qualify for US citizenship, even those who are in the US without legal status.