Sorry to hear about the pain Jacob. I had major abdominal surgery 5 years ago and the pain was profound. The docs also dispensed pain meds only with much begging. The approach to pain management here is still in the dark ages. Granted it is dangerously easy to get hooked on the meds, but I believe there is a lit of data that suggests effective pain management can improve recovery time.
In my case, I found that it was very very important to stay ahead of the pain. If I waited too long to take the meds, it was exponentially harder to tame the pain.
Like Vicki said, make sure you get plenty of rest. Also stay hydrated. I hope today is better.