Sorry for my late reply because I am out of office today.
Oscar test is 唐氏綜合症測試, like measure the 頸皮,etc. It is a must for those pregancy over 35 years old. Because I'm 34-year old now so better have the test for bb. Read from others reply it can be done on the week 18-20.
As I'll consult my doctor in early Oct, I'll seek her advice to see if I need to conduct the Oscar test or not. I'm 33.
By the way, do you feel any symptoms, like nausea, lost of appetite, etc?
I feel very sorry for the miscarriage of Bebichhichi. I feel regret about telling most of my friends and family about my pregnancy so early. I'm a bit worried about myself.