I had any second trimester anamoly scan which shows a swollen kidney of my baby of size around 5.8mm. Radiologist told me that sometimes such things resolve on its own before baby's birth and if in case the size doubles in next scan then further investigation has to be done. I am jst too worried. I have a child already who is 6 years old and is completely normal. Will it cause any danger to my unborn baby? And what precautions to follow ?