Colace is very gentle and works well. Gentle over night results.
Driving was very painful for me for a couple weeks. When I finally was given the OK to drive I used a pillow behind my back which helped a lot.
It might be a good idea to let the university know about your situation to give you a little time to heal. It won't do you any good to push too hard right away and end up with problems down the road. Just a thought.

Sandy Kay