I have fallen about five feet and landed with out bending my knees. now i have pain in my calf and thigh, what should i do ?

Mild Trauma: Those muscles were likely engaged at the time of the fall in effort to protect the knee joint. Suggest initial treatment for muscle strain with hydration (1-1.5 liters per day) and naproxen OTC 2 tabs twice daily with food for three days, assuming you have no history of GI bleed or allergy to NSAID class medications. If pain in the knee joint itself develops, see an in-person doc for a joint exam.