When did he get the toradol? How long has he had the headache?
The toradol should have been completely out of his system around 6 hours after receiving the injection. I highly suggest having him return to the doctor and report this headache. Further investigation needs to be done to find the cause of the ongoing pain.
Sometimes excedrin (caffeine) helps a headache better than anything, but I would highly recommend he have this checked out in the morning.
If the pain is enough to keep him awake or keep him from every day normal activity, he might consider going to the ER tonight for quicker relief.