First, let me say I feel your pain!
I don't know exactly what kind of headache you're experiencing, unfortunately there are many types. I it is indeed migraines, normal OTC pain meds rarely are effective. Have you seen your doc? There's several preventative and rescue drugs better suited to assist with migraines. I can't advise which would be appropriate, but id avoid taking huge doses of OTC drugs as you're likely doing more harm than good.
Heat, bright light are both migraine triggers and light sensitivity once a migraine has set in is very common.
Hopefully you can find a balance of preventative actions (like dark sunglasses, stay wellllll hydrated) and if needed, preventative meds that will keep you from ever getting to the migraine.
I wish you luck!