Do you suffer it for a long period or does it just occur this morning making your feel a slight hurt? If it is the latter, don't worry, it might just result from your incorrect sleeping position, which pushed on your spine. Generally, cervical spine problems can also lead to referred pain to the ocular area, but it usually is not so intermittent. Relatively, blepharitis can cause eye dryness. You can try to use a cotton ball with some warm water to scrub your eyes, as well a wash cloth. But when it gets worse, or it occurred after sinus congestion or some allergies, you need head to your optometrist to see if you get a recurrent erosion syndrome. Rest your eyes and wait a while to see if it gets better.