I have no idea what kind of headache you are having but I would contact your doctor about it.
I had a similar headache myself but mine lasted for 14 days and was constantly there all over my head. It didn't ease of. It was always there. So I understand how awful you must be feeling.
Definitely contact your doctor or go to the hospital for a MRI if the pain becomes unbearable or doesn't go after using painkillers. Meanwhile try lying down in a dark room and see if this helps relive the pain somewhat.
Good luck at docs!