Dear
I am sorry for the symptoms you are suffering 
I read your query and understand your concern 
It seems you are suffering from tensive headache 
I think you will dominate pain if you start the right treatment 
In my opinion a combination of daily treatment (amitryptiline) and NSAID (
ibuprofen) for some days will really help you
You should avoid caffein abuse, avoid amethyst drinks and don't miss meals
I don't think you have reason to worry too much, tensive headache is fully treatable 
I would strongly reccomend to take contact with a 
neurologist and discuss about my opinion (
chronic fatigue syndrome must be rule out)
As 
blood test was normal you have rule out 
anaemia so I think you will be fine after starting treatment 
Hope my answer will help you
Stay healthy 
Best regards 
Dr Eris Ranxha
Neurologist