I think someone else is using my Google Account.

Tip: In most cases, this can be resolved by reset your password to prevent anyone else from accessing your account again in the future.

If you're not receiving the password-assistance email, check our troubleshooting tips.

If you don’t know your password, you can try using the recovery options on our password assistance page. If you find that you no longer have access to your recovery options, you can click the link underneath the list of options to fill out our account recovery form.