Is it better to not look at the ultrasound ?

I have my next ultrasound in two weeks and we will find out the gender, but this time we want to wait until birth lol it makes things exciting, or I want to tell the tech to write it on a paper and when we really can’t wait anymore we can open it. But I’m afraid when I look at the ultrasound I will find out, my first is a girl and I already know what the hamburg looks like lol so this time if I see anything different I will know its a boy lol. So if you don’t want to know the gender is it better to not look at the ultrasound?