Originally Posted by
Kiechi 
See if they changed the email? If they changed the password only, then request the password through "Forgot your password?" and it'll send the password to your email.
Yes, see if that works first. Usually networking websites will have a history database that records changes and whatnot. They will be able to see which computer with what ip address changed what information on your profile.
I wouldn't be too worried about R rated pictures. Atleast they didn't get a hold of your financial information or anything. Good luck to ya.