If you took ALL of the steps at the blackmail scam/sextortion site and filled out the form, then just keep watch of the google alerts if any arise. Your best way to fight the scammer is to just disappear for two weeks. They move on quickly if they can't contact you. Also, you might try to recall your money from whatever service you sent it from. (Bank, Western Union,.....) If it hasn't been picked up by the scammer or someone working for them, you might get your money back. No guarantees though.
After you open your accounts, do not accept friend requests from anyone you do not know. Also, keep an eye out for anyone who claims they can get your money back for you. They are just other scams.
ETA: Ninja'd by the Boss
"Look for the lies."
Being Blackmailed? Go here and do this first: https://blackmailscams.com/
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