3 positive tests and Confusion too. Last AF 8/1-8/5

Bella

Waiting for a blood test on Thursday but I got 3 positive tests. Af is due on the 30th. Haven't told anybody until I know for sure because I am high risk and I got into last pregnancy with family. Digital was yesterday (8/26), First Response day before (8/25), and clear blue day before that (8/24). All FMU. Is it Normal to be nauseous at what I presume is about 2 or 3 weeks?