Is my doctor confused or what?

I had an appointment today with my doctor and she said "what week are you now?" while finding my info in her computer (she has a lot of patients so I don't blame her for not remembering exactly) and I said I was 34 + something and she finds my info and said "No, you're 33 weeks pregnant" and I'm so confused? My due date is October 7th and this app says I'm 34+ something. Who's right?

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