Am i the only one?

Hi, I am 13 weeks and 2 days pregnant I had my first ultrasound two days ago and throughout the time I know I was pregnant before the scan I felt like it wasnt real and it was in my head even though I was very excited and I thought that the ultrasound would show that, but instead it show my happy camera shy baby but there is still a part of me, I guess, that feels like I'm dreaming, so my question is does or has anyone else felt like this? :)