In Australia it's 35 weeks but most people on this app go by some other method.
You start your 8th month at 32 weeks
It's at 31 weeks actually but some will disagree
First trimester:
Month one: weeks 1-4
Month two: weeks 5-8
Month three: weeks 9-13
Second trimester:
Month four: weeks 14-17
Month five: weeks 18-21
Month six: weeks 22-26
Third trimester:
Month seven: weeks 27-30
Month eight: weeks 31-35
Month nine: weeks 36-40