Bad ultrasound tech?

judy
I am 14 weeks and 1 day, had an ultrasound yesterday and the tech gave me the worst pic for the second time. She doesn't even try and doesn't let u see as she's measuring the baby. The pic is horrible I can't even tell where the head is. I've voiced this concern to my doctor. I'm just wondering if she get clear and good pics for the doctor. She seems uncomfortable and like she just wants to get it over with. Should I find another doc because of this or am I just overreacting?