Well, since virtually every illegal alien who paid into the system was using someone else's (or made up) number, how do they plan to sort that out? Will benefits for a given number be given to the first to file a claim? Or perhaps preference will go to the first Mexican who files a claim for a particular number.
No. You need to contact the SS Admin. re: what you have paid in and what they have on record that you'll receive. They'll mail you a report/summary. Keep a close eye on what shows up on it. If you see any discrepancy re: past employers, I would report it immediately. That's all I know to do. Someone else here might be more knowledgeable about how it works.