What do you mean by "no shadow detail at all"? what is your subject?
It's not possible to give you a useful answer without seeing the negative and the print you made. If at all possible, show the actual negative to an experienced printer in your area. Or at least post a jpg image, and give as much info as you recall about the shot. Otherwise, we'll just repeat theoretical possibilities.
You are probably underexposing and then to compensate for the bad negative, printing with higher than optimal contrast to make the midtones "look right". Or perhaps, your expectations are too high for this medium.