Lmp was June 2nd which would make my DD around March 8th

My ultrasound dating scan put my DD at March 16th

I realize that being a week behind isn't a big deal, but an extra week in the first trimester kind of sucks. I should be 11 weeks on Saturday but instead I'll be 9+6. We are announcing on hubby's birthday when I would have been exactly 12 weeks that day, but now I'm having 2nd thoughts. I'm feeling down ladies

Anyone with similar DD, when was your lmp? Did you measure on time?