Due date question

Naomi

According to my last period my due date is 7/30/19 putting me at 6 weeks 2 days

According to ovulation (which I tracked), due date is 7/28/19 6 weeks 4 day

In my first ultrasound they measured baby at 6 weeks 6 days due date 7/26/19

Which due date should I choose????

Thanks!