rebeccaann - sounds like a sinus or tension headache to me...the pressure can make your head feel quite tight....or high blood pressure. First take your blood pressure to make sure it is not high as that can cause symptoms like this. If it is high, contact your doctor.

Then you could try a heating pad to the base of the neck, taking an over the counter analgesic or a nasal decongestant. If you are on other medications, make sure to check to see if you can take any over the counter meds.