Went to my supposedly 12 week ultrasound, turns out im almost 14 weeks. how?? i think he or she is…

Went to my supposedly 12 week ultrasound, turns out im almost 14 weeks. how?? i think he or she is probably growing ahead . Anyways my little one was so lazy lmaoo. Thr ultrasound tech literally had to shake my uterus up for my baby to move lol and it moved for a bit then turned to the other side lmaoo. Little mr o ms attitude