Yes, you can have Lupus without many symptoms at all. And if the drs are reluctant to call it Lupus. That could also be known as a Connective Tissue Disease. That's what most drs call an AI disease that is unknown. Then there's Mixed Connective Tissue Disease where you test positive for several different AI diseases.
Hope that wasn't too confusing.
Lupus, Connective Tissue Disease, Fibromyalgia, Chronic Fatigue Syndrome, Chronic Anemia, Bulging Discs, Pinched Nerves, Athralgia, Degenerative Disc Disease, Celiac Disease, Endometriosis, Rhynauds Syndrome and last but not least at the moment, Erosive Gastritis