There is nothing you can do! You are marooned up the stream without an oar!
Unfortunately, if, when you created the account, you have not registered a an alternate recovery email address or phone number to which you have access to receive a reset code, you cannot prove that you are the account's legitimate owner. Hence account recovery is absolutely impossible and there is no way around it.
To get back into your account, log into Facebook and follow the instructions to verify your identity and, if necessary, scan your computer for viruses.
Don't Open your Facebook account upto 96 hrs. Clear the cache and stuff like history etc.
If you still can't, go through the automated security verification process.
If you think, your Facebook account was locked or disabled by mistakes.