Just found your post...you can consider yourself blessed....like myself, I had a cerebral aneurysm in 1999. I am not trying ot frighten you or upset you, jsut telling you form my standpoint. I had headaches before the anureysm, and to this day, I have stress headaches. I have learned ot tell the difference between sinus headache, and stress...I do have some age on you. I've taken so many NSSAID (advil, motrin etc, its casued gastritis. So, now I try to take as little as possible. My suggestion, instead of reaching for a pain reliever, try a cold pack of peas (or anything frozen) from the freezer. Place this in the crook of your neck and lie back and relax. Dehydration causes headaches, therefore I drink a lot of water. School can be demanding, so instead of trying to cram and stress out, pace yourself. You need to look online at relaxation techinques....if this persist, i'd suggest seeing a neurologist (GREAT HEAD DOCTORS)! I do hope you find relief, you are too young to have this happening to you! God bless you! Hope I've helped some! FGM