Someone blocked me so I had to complete a security check on facebook but..... ?

[Annoyingman196]

I sign in then I put a security code then start the security check.
I have to identify friends by their photos , so I did it and passed it I think, because it didn't say anything about me taking a long time doing it. It just sent me back so I could log in but it takes me to do the security check again.
It is my account what do I do?

[Eric]

Change your password, put a complicated one, make sure that any person is not mischieving with you. Set privacy on your profile. May be, someone is trying to log in to your Facebook profile.