login name change

I recently posted a message. when i returned later in day to refresh my memory as to what i wrote
i could not find it,
i looked in "my posts’ in control panel
a bunch of posts came up with same login name as mine
but not me
can i change my user name???

There is only one registered user called “lori”.
Your previous posts are:

but of course that post was mine…was so long ago, i had totally forgotten about it.
sorry for the trouble.