I know how you feel man. Ive been growing for almost a year now(which isnt long, still makes me a noob)
I still get a little anxious the first week or two. Some auto's are just really slow on the above soil development. First couple of weeks its really working on those roots. They will start to take off more noticabley after you hit around 14 days..and after the 3rd week they really start to take off...then after that you get the preflower stretch...Its awesome. Just be patient. If you stay on top of it, and apply a few simple rules. You will be fine man.
Just make sure your Ph is right ~6.5, and start out at 1/4 strength or 1/2 strength nute doses/ dont over/under water. You'll be fine. In a week or so, you will see.
Im assuming you went organic? since you got some manure. I dont really know much about the nutrient content of the manure. Couple of just added a tad bit to much. Since Autos are nute sensitive, in comparison to photoperiod strains. Is manure rish in N? (Nitrogen.)