Female, 9 years old, has little interest in grain or hay, drinks very little water. She is urinating very little and strains at the end of flow. I thought she had a urinary tract infection as there was some blood in urine. Gave her penicillin G, 3cc for one week. The blood was gone and she seemed better, but now is off food and water. Gave her probiotic paste. I am new to this and don't know what to do. Any suggestions?