I spoke with the Dr about why he wanted this test.He said that although they did get a picture of my baby boy's heart and could see 4 chambers that it was not a very good pic and he would really like to get a clear pic of the baby's heart and he is not really worried(there were no markers for any type of defect) He just wanted to be able to get a clear pic. This is an office that my dr sent me to because of my age and I guess that this is what he specialises in. I am having the test done, but that is they last one. He is the same dr that pushed of an amnio and I have had 4 u/s in 20wks and they have not found anything wrong, also I have had no bleeding or cramping, and only a 11 lb weight gain but still have to go to an apt every 3 wks instead of 4, Not that I really mind but this office is over and hour away and I have 3 disababled boys at home and it is very hard to find someone to pick them up from school and keep them untill I get home. So if all goes well I will be telling them NO MORE tests and once a month apt. thanks again