Not a lotta symptoms :/

Maybe I am being paranoid but I keep reading on here about MC and babies that stop developing... I'm 8 w 3 d today, going for my first US this Thursday and I am freaking out. I barely have any preg symptoms(boobs hurt a little and I do get sleepy) other than that no weight gain, no morning sickness, nothing else! I am freaking out that something is wrong with my little bean. Anyone else experiencing this???