Pregnant but so scared

I'm 2 days late in my period and I tested, the first one was hardly visable but had colour, I've tested since with a clear blue and it has the cross (faint). I have a little girl who's 2. I found out I was pregnant at the end of July but miscarried early August. I am sooo scared to experience another miscarrage. I feel I can't get excited, my partner feels the same. I know there's nothing really anyone can do to ease the worry, but having a miscarrage was the most painful thing to go through. I don't really feel pregnant atm, so worried it won't 'stick'