Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
Difficult to predict as there are plenty of reasons for this kind of headache. The two most common causes are
You should get a CT scan
head done. If there is anything serious then it will be evident.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.