my urine report shows 10-15/hpf pus cells-do i need to be concerned or is it going to take care of itself-i hv no pain or any kind of problem that i m aware of-shld i get a urine culture done and take a course of antibiotics-also i wld like to point out another problem,my teeth hv suddenly been discoloured and stained ,my upper incisors are white but the lower ones r stained-i m very worried coz i ve always had very white set of teeth and now its different-pl help!!