aww thats awful. i would have complained, and said may i see the screen please!
my 12week one was awful, she showed us the screen but for like 10 seconds and was quite rough with me.
my 20week one, the sonographer was a bit funny with me throughout, OH and both our mums could see the screen and i couldnt so felt like i was missin out, she turned it near the end but for only a few seconds again.
you think that showin people their babies on the screen would be such a delightful job and that theyd spend time and realise how important that time is for the mother.
my auntie had hers yesterday and they couldnt even measure the baby properly cuz of how baby was lay, they told her to go for walk and a drink and come back but didnt say whhy so she spent half an hour worryin.
i dont think the NHS will give u another scan, but i would complain about the sonographer.