Someone on omegle has hacked my facebook?

[Mahamoud]

change your password on your facebook if that person is already change your password you can reset by sending your email or protect you facebook and also i suggest to you to follow this steps
steps number 1 go to the security settings
Notifications of access
You can receive notifications when logged into your account from a computer or mobile device that you've never used before. Select a notification method from the following. SMS or email
Steps number 2
Approval of access
Request a security code to access my account from an unknown browser
i hope you understan and i hope the answer there are helpful