When is my due date?

So I need help. I don’t have a dr. Yet to ask but I’ve had 3 ultrasounds so far ( I’m abroad visiting family) and I forgot to ask them. So according to my last menstrual period I am supposed to be 10.1 weeks but last ultrasound baby measured 4 days less…. And the ultrasound before that the baby measured 7 days less….

Si should I follow baby’s size or LMP?

Thanks