Growing deficiency

Senor, your plant looks fine, don't make your soil to wet, your root can't handle that yet. If it is to wet it will go into a shutdown or get rotten. Also make sure you do not hold much nutrients in the soil yet, like Sup3rNov4 said, it can be nut shocked and being into lockdown. What happend to me most of the times, is that my plants like to grow/stretch for a week, then stop stretching to root a lot. after a couple of days/ max a week, they grow/stretch again. Overal you have a nice looking youngling and you will be fine. Make sure you have this pictures bound to your diary so people can get the information better/faster about your grow and can get rewarded helping out. Goodluck :)