CVS testing

Hi ladies- I'm almost 9 weeks and 33 - I'll be 34 when my little one arrives. My doctor is recommending a CVS test so I can be fully aware of any issues that may not show up in standard testing. I haven't gotten results back yet on my results from standard genetic screening. I like the idea of knowing 98% so I can enjoy the pregnancy but I'm scared of the chance of miscarriage. Any advice or experience?