hi, i had a c-section delivery in august 2011. i started having pain in my knees when i feed my baby in sitting position. the pain was so severe that it was difficult to straight up my legs. the pain was not felt in standing position.. but now a days my knees started paining in standing postion and it gives some relief when i fold them.. Plz suggest why so and wat i can do to cure the pain.. necause sometimes it unbearable.