Hi thanks for your question.
You had a fall on your righy side and injured your right hip.Walking is difficult and you cannot put pressure on your right side Though you don't have any externan injury
but internal injury or a fracyure cannot be ruled out with out an X Ray
.I will suggest you to consult an orthopedician who may examine you for a fracture
and may advice you X Ray to confinm a fracture.
Hope this answers your question.