Just remember that any sign of anything not being 'normal' they will test you to make sure that both you and your baby are safe and well. My heartbeat kept showing irregularities in my first pregnancy so was sent for all sorts of screening, turns out I have a funny left ventricle that likes to skip a beat every so often and play catch up, no risk to me or baby but they need to check :-)
My friend was told on both her babies one kidney was larger than the other. She had to do an entire array of tests and turns out it was nothing....one kidney Just happened to be bigger. I know it's hard but try not to worry. Remember that your chances of something being seriously wrong are so small.
etismyhero thanks just has me a little worried
With my first kid they said something was wrong with the heart and sent me for a 3d ultrasound. Come to find out everything was fine.