Unfortunately you have to wait to reset your password again,
and you may have to get another reset code afterwards.
I have read that you may wait up to 1 to 3 days to be able to reset your password again.
If you are still having trouble receiving a password reset code after a few days,
please contact Facebook using the link below that I have provided to let them know that you are having login problems.
(This was copied from xdudeitsemily