Hello and thanks for the query
Burning sensation is usually a common problem after regular dilation. As your report says their is no infection but slight blood cells only. So no need to worry. Just you need a alkalizer and drink plenty of water.
During dilation procedure we need to flush the track and drinking more water and doing more urine is the safest procedure. So drink more water and have alkalizer for quick relief.
But if pus cell and RBC
increases in urine report than consult your doctor for the reason and treatment.