I wouldn’t worry about bra measurements, go with how you feel.
When i had my first BA i was measured in 3 different places all on the same day.
LA senza measured me as a 36A
Bravissimo measured me as a 30G
Neither of them were comfortable, neither fit!
For the past 6 years I have worn a 34D, i don’t even know where they get their ideas from!!