Headaches are a very common symptom so it can mean so much. Just a few suggestions:

I see in your pic that you have glasses maybe a prescription change? High blood pressure? Not enough sleep? Stress? Migraines? Pinched nerve? Caffeine withdrawal? Bad posture during sleep? Bad mattress? Poor pillow management?

Go to the doctor!!

Keep us posted!! Feel better!!

I agree with Dezzie about stress. It likes to manifest itself in the ugly shape of pain.