Why did you not see a doctor?
hi! i experienced the same thing a year ago and found out i have tumors called "cavernous hemangioma". they are blood vessels in the shape of blackberries or raspberries and i didn't find out until after a check up with the doctor and an mri. my best suggestion to you is to not wait it out and get checked asap because it could be serious, or it could be stress.
for a year i have lived with a nonstop headache that shifts to different parts of my head and it feels like someone is stabbing my brain with a knife and feel like i need to faint but i just relax myself. that's basically what my doctors told me to do in my situation, just learn to relax and breathe. stress could be a big factor in headaches, but don't hesitate in going to the doctor or getting an MRI. consult a neurologist and he/she could help you out from there. i know i'm not a doctor (although that's what i plan to study) and it's not my place to diagnose you, but i went thru the same thing. i'm just suggesting possibilites (: