What would you do ?

I woke up with a major head ache really close to a migraine, I thought I was hungry and made myself a decent breakfast egg a grill tomato and some beans, half cup of coffee and after that I rest on my bed by 1 pm headache was still there so I decided to take the allowed dose of Tylenol extra strength, the headache went away only half an hour and came back by this point around 3 pm I had already drink 2 liters of water (68 oz ) is know 10:35 I drank more water and send my husband for 1 Gatorade and pedialyte finish both and still my head ache is horrible I’m not sure if by going to the Er for fluids will help :/ I don’t think I’m dehydrated since by know is more than 120 oz of water I have drank i just don’t know what to do. I did have dinner rice and chicken and for lunch some fruit.