Hello, and thanks for your medical question on E Health Forum.
The history provided seems that your pain could be due to soft tissue injury on the head, in the form of a contusion.
This could be benign condition which will resolve within 1-2 weeks.
You might also consider to continue the pain killers and also apply ice packs on the painful area. You should also take bed rest which will be a major part of the recovery process.
I hope this helps.