Nervousness about first pregnancy

Alice

Hi all! I'm 20, and this is my first baby. I got my first positive on Aug 31, and it says I'm only 3wks5days but i think i'm a liiitle further along than that. I've never had a miscarriage before, but I am very nervous about my baby not sticking. Any words to help ease my mind?? I don't smoke, and haven't drank since I ovulated, have started my prenatals, and am trying to eat really well. Going in next week for a blood test, but for now I just keep peeing on sticks..