I Have Had An Headache That Has Been Lingering For

I have had an headache that has been lingering for about a week. It's located on the right side of my cheek and behind my eye. I thought that it was sinus but after going to the emergency room they ruled that out. They said that it was likely a migrane. I have set up an appointment with a neurologist but the first available appt is October. I took some ibuprofen and today, I don't have the headache over my eye. But I am feeling not well, kind of weak. I also have high blood pressure but it was also ruled out. Is this feeling of off balance normal.