i already had an access to my gamil account which i use for my facebook account. i don't know what happened since "google team" didn't provide me any explanation on what happened to my account. since i cannot access my email and also my recovery mail i filled-up this form then provided some info bout my account then waited for google accounts' email regarding their "investigation". lucky me they set my new recovery mail and was able to change my gmail password.
anyway. always change your password. but of course remember them.
happy and addicted again to facebook (^_^)