She made a mistake.
If your last period was Aug 13, you are now 6 weeks pregnant.
If she was going off other measurements, like a sonogram, you may be further along than you think and just had random bleeding in August.
But if she's calculating from your period in August, she has calculated one more month.
Opps i meant aug 13!!!! Omg
Im lost? October was almost 12 months ago?
You have to calculate the two weeks after your period. You usually ovulate between 10-14 days after the first day of your last period.
So what your doctor is calculating sounds correct.
They count your weeks as the first day of your last menstrual period.
If that makes sense.
How could your last period be October 13 since it's currently September?