Am pregnant with DC3. My brother has Downs and the docs are not sure whether it's hereditary. My 2 other DC's are fine, had an amnio with the first and detailed scanning with the second (wasn't allowed CVS or amnio with her as bleeding constantly throughout preg). Keen to find out about CVS as worried about Downs Syndrome (plus I'm mid-30's now too). Any experiences, advice etc very welcome. Thanks