My Dad has a dull persistant pain between the top of his left hip bone and his lower rib cage on his left side. It keeps him awake at night...can't sleep. During the day it goes away and he thinks it is over and then it comes back. He has had it for three days. He had Cat scan that showed his digestive system was OK. They took urine and blood and prescribed Ciprofloxacin 250 mg tablets. They aren't helping