No problem. To be honest i don't understand why they word it like they do in weeks ahead,behind ect. If they're not going to change your due date then why not say measuring a little bigger/smaller than average?
My baby measured 2 weeks ahead for months but I had her at 41 weeks. If they went by the measurements it wouldve been 43 weeks n they induce at 42 weeks latest here in the UK
I think the baby would be classed as premature if they have not changed your due date as the measurements are not always accurate