Hey man. These arent pistils yet, these are the first nodes. Meaning that the plant is going to produce side branches from that node. And pistils later on in its life. Oh and you really shouldnt worry about your plant's health THAT much, it is called weed for a reason :P Most plants actually appreciate a good Care - Leave alone - balance :) (and a good overwatering, too. Just kidding, Im just that casual dude thats giving others tips on how to grow better but overwaters frequently lol)
Cheers and good luck !