All day headache

I have had a headache since this morning about 9hours.. I’ve taken Tylenol 10:00am and 5:00pm I’ve drank some water.. more water, tried some caffeine. I tried a washcloth on my head, I’ve been in bed all day and I have ate I just can’t sleep now seems worse when I lay down. I am so tired has anyone experienced this? I do suffer from migraines but it’s been at least 2-3 weeks since I’ve had one. I have checked my blood pressure on multiple occasions today because I do have issues with that, all normal ranges each time. I thought it could have something to do with the pressure change and humidity as it was over 100 today.