is it a dexlexia problem Monkey? I know there are "tricks" out there that can help you. Could be a tongue positioning thing too... can you phrase things in the manner that helps you : like, would "how'd you like your sandwich" be a better start then "what can I get for you?"? I've had friends that stutter but never actually asked them what they do to cope. I stumble on my words sometimes. I try to laugh it off...but mine is more from when I am tired.
You must be managing though because you have gotten this far in University and working a job! But I understand it has to be frustrating.
A little story that may be of encouragement is the astronaut John Glenn's wife Ann stuttered from childhood (like so incredibly badly she couldn't read a loud or hardly speak) and eventually was able to do speeches.Check her and others stories if you'd like to be inspired on the following link:
http://www.stutteringhelp.org/content/a ... nspiration