Hi
Welcome to the MedHelp forum!
Sudden onset headache can be migraine, tension headache, benign intracranial hypertension, brain tumor or due to high blood pressure.
Please consult a doctor immediately to rule this out. Take care!
I agree with paperclips....go get yourself checked out ASAP.
Get yourself to a Doctor or the Hospital. It could be an anurism or something like that. Better to check it out and be sure you are safe!