hello, according to what you have described you have vascular headache
or migraine headache
for which regular lifestyle is important that is timely food, good sleep and avoiding some food items like cocoa, cheese ,chinese food, colouring masala,nuts.
,hot sun ,noise and cold
. i think that the tablet you are taking is not working for you.so consult the doctor and try some other medicine which will help you. dont worry vascular headache is curable.