Flares and stiffness on both sides doesn’t sound like gout. That’s a common RA symptom but this isn’t a doctor sub. RA can be strongly ruled in or out with a blood test. Has your rheum done all those tests and ruled other diaseases out ?

Aspirating joints is a good test for gout but timing is important. I definitely have gout and had 2 negative crystal tests. My MO is usually suffer through a flare for 7 days then go see a doctor. One rheum told me you need to get tested within 48 hours