You may think that you are young for developing spinal stenosis, but you really aren't.
I know I read somwhere in the past few years that 30% of 30 year olds show degenerative changes in there spines but have no symptoms.
In your case, in your late 30's you are showing symptoms.
Another point is this statement from you, "I did work a job for 6 years that required me to stand for long periods of tme while wearing a heavy equipment belt around my waist."
That could have something to do with your stenosis. From various sources I have read, there are quite a few of our military coming home from Iraq with spinal problems, including stenosis caused by disc problems, from the heavy equipment that they are forced to carry around with them.
It is also possible that you have narrow canals going though your vertebrae and if that is the case, it wouldn't take much to create stenosis in you spine.
Just because spinal stenosis and spondylosthes is usually found in those that are over 50, doesn't mean that it isn't found or found fairly often in those under that age as well.
Have you had a second opinion on your diagnosis?
Have you had any treatment suggested?
Have you had any treatment, either conservative or surgery?
Fran