starting to feel nervous

Susan
This is my 3rd pregnancy (2nd I miscarried at 9+6) I also have a 7 year old. I'm feeling so nervous atm I am 12+1 from lmp and have my first scan Tuesday. I just feel paranoid that something will b wrong, I've had no real symptoms apart from sore breasts and some nausea. Which worries me as with my first I was sick everyday for weeks! Everyone just says wat will be will be but I so want everything to b ok!!