I'm suspected with rheumatoid arthritis.my doc & results to come back in 3days.now i have petechiae on feet should i be alarmed & go to the emergency?

See details: Call your doctor first and see if he/she can see you. If not, an er visit is reasonable.

Depends: Call your doctor and tell him/her about your current symptoms. It sounds like a vasculitic rash (inflammation of the blood vessels) but there are many possible causes for this. You may have a different autoimmune problem with inflammatory arthritis as a part of it. If you have a fever, or feel unwell, it would be reasonable to go to the er on your own but your doctor who knows you would be better.