Due date confusion

Hi all,

I am a little confused about my baby’s due date. Can you help? I am getting mixed info.

My cycle is typically 35 days long, LMP being Aug 9. Ovulation 8/29. Would I be considered 4 weeks and 5 days today or 5 weeks and 5 days? Due date May 15 or May 21? Wonderfully enough it’s right between mine and hubby’s birthdays 😊!

I know there is no definitive until a later ultrasound but I would love to follow my baby’s expected growth a little more accurately.

Thanks!