Are you taking any medications? Sometimes there can be side affects that are exactly as you describe. If you get up too quickly and are taking some anti-depressants(amitriptyline does it for me) you will get quite dizzy for a few seconds. First I'd check your meds(www.webmd.com actually has a lot of good med information, more than I got from some books and stuff), then check with your doctor about other stuff if it isn't the meds or still do. Raven