I'm not entirely worried because baby has a good hr and wiggly! However.. I did have a miscarriage a year ago and I'm not sure how common it is for baby to not measure up to the date you should be? I would be 10w but as of wed baby measured at 9w

UPDATE-edit

My first ultrasound was when i was 7w1d and baby measured 6w3d.. Changing my due date from 7.5 to 7.10. My next ultrasound was 3 weeks later when I should have been 9w3d (by new due date) and baby measured 9w. Still measuring short then it should be.. It's not consistant it just keeps getting further and further from where we should be.