I have + ra, ana 1360, +dna, +ssb. no +dx by dr but large brusing started on legs knee dn with pain, burning when i sit, stand or walk. is this a 911?

No, Rheumatologist: The lab results and symptoms suggest an auto-immune disorder. Please consult with your physician for referral to a rheumatologist. It is not an emergency but needs to be evaluated asap.

Not 911, but a rheum: Your profile suggests a sjogren's/lupus\ overlap. This is significant. Positive rfs are seen in both of these. Clearly a low platelet count is of concern. See your pcp if you cannot be seen quickly by a rheumatologist.