Facebook security check

Hello,

Facebook security check point confirmation code does not work
Hi this is Nabir Hossain. My facebook profile name is "Nabir Hossain" Its my secondary account . My original account link ishttps://www.facebook.com/profile.php?id=100012564551357 i have got a big problem to login into my account , after login i a security check up and also showing "a code was sent to 01628347081please eneter the code here when it has arrived." but after entering the code i couldnt pass the check point . where i got another messege that was "the security code you entered it was expired" . what should i do now? that is my main facebook account where all of my important links bussiness and page are linked up . please do something for me .