Genetic testing -yay or nay?

Gen
Hi, hoping for some input?
​I am almost 9w and had a previous miscarriage around 10w. Looks like docs are too busy to see me until I'll be 12-13w so they said over the phone if I want genetic blood test to get referral and do it b4 my visit.
​I don't know much about the test and it's accuracy... Etc Would you get it done?
​I know I won't do any invasive testing to harm baby and I'm not sure what I'd even do if test came back positive?
​Is it better to know or not?