Hello.

First of all, you should consider this headache as something you need to address on a priority. Even if there is nothing serious, it's still a rational idea to consult your Physician as soon as you can. You might have to undergo a few mandatory investigations. From the description we can't say how serious or dangerous this is. Hope this helps. Let us know when you get it evaluated. Meanwhile, avoid strenuous physical work, sleep well and take adequate fluids. Avoid too much coffee. Take care.

Abhijeet Deshmukh, MD