space after using auto correct command

[Rasoul Khoshravan Azar]

When I enter a word or phrase using auto correct, always a space enters at
the end of the word. This is cumbersome when I want to put period (.) just
after the word.
Is there any way to modify auto correct, not to put a period at the end?

 

[Rasoul Khoshravan Azar]

Dear Mitchell
Thanks for your reply.
The autocorrects are created by myself.
But I don't put any space after end of word in replace box.
I think it has something to do with typing options.

 

[Suzanne S. Barnhill]

AutoCorrect entries do not fire until you type a space or punctuation.