You probably suffering from migraine.. migraine is not only that pain in only one side... There are lot of varieties of migraine.. most common symptoms are sensitivity to sun, some kind of smell, some kind of food.. frequently associated with nausea but not always
Next Steps
if frequency of headaches are more than 5 per month then you need prophylactic treatment like topiramate 25 mg twice a day... for pain you can take tablet headset sos.. your frequency of headaches will come down slowly..