Please help, had NT scan and combined blood test yesterday and its come back 'HIGH RISK' for Downs Syndrome?

Those tests come up with A LOT of false positives and my doctor actually advised me against getting them. But I am only 23 and probably at the lowest risk for having a Down Syndrome baby that I will ever be in my life. The way he explained it to me was that at my age, the risks of complications arising due to the amniocentesis testing outweigh the actual risk of me having a baby with this condition. The crappy thing is, you've already gotten the "positive" result from the initial tests, so if you don't have further testing done, you're going to be a nervous wreck for the whole rest of your pregnancy, probably needlessly. That's why I decided to forego those tests. Do whatever will put your mind at ease, but be sure and research the risks involved with amniocentesis.