The doctor order the techs to check them during the ultrasound. I went through the dizzy spaced out feeling for over 3months. I could not get off the couch. If I raised my arm or turned my head to right, it would get really bad. I had found vascular doctor on my own, thank god. I had one doc tell me he knew problem and not to go to any other doctors. I am so glad I did not listen to him. He was a very arrogant doctor. I totally understand what you are going through. I only have two kids, but I use to work 60hrs a week. I have been unable to work since April 2011.