Upper right abdominal pain, right leg swelling is this an medical emergency ?

Leg swelling: I would see a doctor ASAP, as new developed leg swelling is not normal especially when is in one side, one should rule out blood clot or obstruction.

Depends: If these symptoms have developed in the last few days, yes this would be considered an emergency. You need to be checked ASAP to be sure you do not have a blood clot in your leg and to see what source of abdominal pain is. Good luck!