Intense head pain between 4-5 am

[Not_Done_Living]

In the last couple of days, i have been awaken by an intense pain covering my front right quarter of my head. I wake up at around 4 am (3:58 am to day, 4:00 on the dot Sunday and Monday)

The pain lasts until ~ 5 am and then goes away.. poof no more pain ..
it feels like my head is on fire, and someone is kicking it to put the fire out.

This morning i took some Motrin when i woke, but it didn't seem to help, and then at 5 it subsided again.

During the day, i have no pain/discomfort.. Any ideas why this may be occurring?