1:1280 is not all that unusual, but it does need to be checked out by a rheumotologist. As Joy (couchtater) says, look at the symptoms of lupus at
www.lupus.org. If you aren't already feeling poorly there really isn't any reason for worry. You will need to have 4 of the 11 symptoms of Lupus to be diagnosed, ANA is not a single deciding factor. ANA can be positive for other illnesses - or in the absence of any symptoms it can mean nothing at all.
Remember, all worrying can do is rob you of enjoying today - it won't change any outcomes for the better and can only make you experience worry/stress symptoms which you don't need! Enjoy each day as it comes, and you'll know when you know...
Cheers,