My wife is 15 weeks pregnant. She had little lower stomach pulling feeling. For safety we did a urine routine test. It had 6-8 pus cells/hpf and epithelial cells plenty/hpf Doctor advised a urine culture test. We did along with Urine routine once again The report says 3-4 pus cells/hpf, 6-8 epithelial cells/hpf. But no growth in aerobic culture. What to do now. We are confused. She does not have any burning sensation or pain or urination problem.