Your views on Oscar test

I am 35. Gynae asked me to take, and the result came out normal. To me, I was thinking, this is a basic test. So touch wood if the risk is high, then i will go for further tests, and if all the tests also prove high risk, then i will not keep the baby. However, if the test is normal, i wont b doing other test anymore. It is just like to make me feel secured, cos i am alrdy 35. And this is my 1st child. So i need some reassurance.