I was always told with my migraines to tell my doctor if I ever had a headache that felt different. I have the type of doctor who will then tell me if I need to come in right away based on the symptoms.
It did go away finally. Still had it last night but I must have slept the right way because it was gone this morning. I also super-indulged myself in a nice hot relaxing bathtub so I’m sure that helped, too. Might have been a tension thing, or maybe sinuses idk.
Good that you got rid of it and I was going to vote you take some Sudafed to see if it helped. Seems to me the sinus cavities go way back in the head.
I do know that when I get ANY sinus problems I immediately get a back neck headache which becomes an ever spreading tension headache which eventually becomes a migraine if left alone. Attacking the sinus problems stops it all and no amount of pain killer matters unless I address the sinus problems.