Pulmonary Embolism Support Group
By far the most common form of pulmonary embolism is a thromboembolism, which occurs when a blood clot, generally a venous thrombus, becomes dislodged from its site of formation and embolizes to the arterial blood supply of one of the lungs. Symptoms may include difficulty breathing, pain during breathing, and more rarely circulatory instability and death.
RA symptoms are often mirrored in the opposite joint - a flare in both hands, wrists, feets, ankles, etc.
If you continue to have odd symptoms of pain, esp if it seems to travel to other joints, ask your doctor to run a rheumatoid factor blood test and/or a C-reactive protein (CRP) test. These tests aren't perfect, but they might help figure out what's going on if you have continued symptoms. Fingers crossed it's nothing to worry about.
Anyway - for now don't worry, rest up, be watchful - and celebrate when you're feeling up to it!