Interior ultrasound

Kira

I dont know if this is the right group to post this but I'm 17 and I have an internal ultrasound on Friday but I've been told that they're very uncomfortable and very unpleasant. I'm worried that this is true and I don't want the added nerves because I'm already worried about the results of that test. Can anybody please tell me if it's true that it's uncomfortable and maybe give me some tips to help calm my nerves and make it easier??