Baby measuring behind at first appointment?

Emily
Hello all, I had my first US on 11/1 and I thought I was 8+4 at my appointment based on my LMP. Well during the US the doctor said the baby is measuring around 7 weeks and moved my due date to June 20th instead of June 9th. She scheduled me another US on 11/22 to be sure the baby is growing properly due to the dates being off. She thought I might have just ovulated late because everything looked normal to her as far as heart rate and such. Also I just stopped my BIrth control on July 18th which was also my last period then did not get the next period until September 2nd. So that was a long cycle....But now I am all nervous for my upcoming appointment. I'm worried that the baby isn't growing and it wasn't because I ovulated late. Anyone else had their dates be off by a week or more and everything turned out ok? Just getting more nervous each day especially since my symptoms are starting to really ease up. (9 weeks tomorrow). P.S. If you can't tell, I'm a worry wart.