question: Im 23-year-old woman, went to the ER 9 days ago with severe, radiating pain in the flank, running a low fever for a week or more prior to that.  Dr. in the ER ran CT scan of the abdomen and did urine and blood test. Minor infection identified in the white cell blood count (he said that only when I inquired about it) and said that he thought i have a kidney stone, but could not find one on the scan.  Sent me home with an antibiotic which I took for 7 days.  During this time, the pain went away, but I showed sign of water retention and puffyines around my eyes like I have never seen before. The day after I finished my antibiotics, I started having green stool and sore anus, a little bit of smear of blood.  The next day the same.  The I have a bowel movement a few days a week.  I eat healthy, home-cooked meals.  Im scheduled to see my family doctor tomorrow but Im really worried.  Sharp pain, cramps, pressure in the abdomen comes and goes and is awful!