What Causes Sudden Pain In Head?

Problem: sudden headache while the plan was about to descent, and it lasted for 5 hours even after alighting. Scenario: I was using my headset and watching a movie on the tv screen. And when the pilot announced to turn off electric gadgets, I was about to pull the earphones off and then I felt a sudden pain in the forehead above the left eye, it started with a chilling cold feeling in the forehead, (like an electric current passing through the left side of the forehead), it followed by a pain in the upper part of the forehead area close to the temple and pain radiating down towards the left eye. The feeling I had was like I hit my head on to something and a lump was caused in that area. But in fact, I never hit my head against anything. The pain continued till I took a paracetamol prescribed by the doctor. Doctor checked my pressure and eyes and found everything to be normal. However, the Next day, I still feel a slight pain in the forehead area. What could be reason for this ?