To check if your home directory exists, try the following:
-open terminal window
ls -ld /home/*
This gives you a list of everything (files as well as directories) located under /home.
Basically, only the home directories of users are stored there.
Try to find the directory for your user. If it contains typos, you most likely mistyped when you
created the user.
If there are a lot of users, the "ls" command above will give a lot of output on screen.
In that case, you may want to try:
ls -ld /home/<your_user> to see if your home directory exists.
If the home directory exists, but is not readable (r) or searchable (x) for it's owner, then you need
to change the permissions. Use "chmod" for that. However, as you indicated, I suspect you simply mistyped and
that's why you can't find your home directory any more.