A week behind?

Spencer • 26, dental hygienist, trying for baby #1

I got a "6 week" scan yesterday to make sure baby isn't ectopic. (Hcg has been weird) and it isn't but they said I'm measuring 5 weeks instead of 6. I track my cycle religiously. My last "period" was a miscarriage AND I ovulated a week late. But the 6 weeks estimate was factoring that in. Has anyone had this happen where they just felt theres no way they could be a week behind but it turned out ok?