Lupus is diagnosed by having "4 of 11" symptoms. Unfortunately there is no definitive lab test or symptom that totally says YES or NO to to the SLE question. Check out more about
lupus at tinyurl.com/HW-LUPUS
You can have Lupus with a positive or a negative ANA. You can have a positive ANA and not lupus, but possibly another auto-immune disease of some type. Sounds like for now you just have to get your labs done & wait for the results.
Hope you feel better soon!