Its not uncommon for ultrasounds to be a little off on how far along you are but by 5 weeks isnt a good thing...im sorry hun but if she is truely suppose to be 10wks its not looking good...im praying that im wrong...good luck and best wishes to you and your gf
If she was 10 weeks by her last month period, then it's not a big deal. I was 12 weeks by my lmp and after the ultrasound it turned out I was only 7 weeks pregnant.
My first pregnancy a few months ago, I was suppose to be 10 weeks. But I only measured 5. I had a "missed miscarriage", and a surgery to remove it called d&c. Being off by that many weeks isnt a good sign. Im sorry and I hope her dates are just wrong.
That happened to me too. I was supposed to be fourteen weeks but only measured nine. It was a missed miscarriage. Was there a heartbeat?