Girls, 16 weeks pregnant. Last time I had blood tests at 12 weeks for Down…

Girls, 16 weeks pregnant. Last time I had blood tests at 12 weeks for Down syndrome and deviations. Now silence. Just need to pee test. Did you have anything else tested from 12 to 16 weeks or even on 16? Because the doctor is silent, and I'm reading a book that says blood should be drawn this week.