Lupus can be quite serious - please take your doctors' advice seriously. If you doubt the diagnosis, seek a second opinion - but don't ignore it.
While some supplements, lifestyle/diet changes, etc can sometimes help individuals, they cannot cure Lupus or even necessarily make it manageable, and make no mistake - Lupus can KILL YOU. If you really do have it, PLEASE work with a good Rheumatologist to treat it.
"None" is a big word - but I'd say almost NONE of us 'like' to take medications. Most of us HATE it. But most of us who have gone off of them end up wishing we hadn't when the disease eats up part of our body - natural methods or no.
I am a big believer in complimentary medicine, but I know first-hand that this disease - just like diabetes or cancer or epilepsy - is too serious for just one sort of approach. The internet promises a lot of "cures" or remissions with supplements, diets, etc - all I can say is please don't go for any of that without VERY CLOSE MONITORING by a competent Rheumatologist. Your life could depend on it! A good doc will discuss all options with you and help you explore your options in a safe way.
Also, many of the medications are relatively problem-free for lots of us.They make us feel a lot better, and though they're a pain in the rump, they're way better than Lupus. AND they're often covered by insurance. it may take a while to find the right ones for you, but they can be lifesavers.
I understand your frustration, but these things can be VERY difficult to diagnose, so also give your docs a little bit of a break. Talk to them, ask tough questions, and get good care.
Best of luck to you, and let us know how things work out!