My wife is experiencing kneecap pain and pain at the front of her thigh above the knee. She can not stand without pain and only gets relief when she lies down (on her side in fetal pose). She has back pain when she lies on her back. She had an MRI and was diagnosed with L3-L4 bulging desk and had an epidural shot 4 1/2 days ago. We have been told that the epidural might take up to 7 days to be effective. Really? I don't see ANY improvement yet. Am I being too anxious? Comments?