Don't want it to happen again!!! :(

Whitney
Okay so I'm 2012 I went in for an ultrasound at 8 weeks baby was fine went in at 12 weeks and they said the baby stopped developing.... I am so so so nervous that this will happen again.... I don't get my first ultrasound until I'm like 10 weeks where I live now and I am just trying to stay positive but I had a friend that this just happened to her daughter and it's making me so nervous.... How often does this happen to the same person?