Plant went without lights?!

Okay. So I went on a 5 day vacation and apparently all of the power to my plant got unplugged. I checked on it and it has grown a bunch and looks healthy, just the tops are a little yellow. Will the lights not having been on cause problems? It's less than a month old so I'm hoping that it's not thinking it is time to flower yet. The nodes do have some very small leaves popping out and I don't know if that means it's starting to flower or not. This is my first ever grow and I am very nervous. Can anyone offer consultation.

p.s. I'll try and post some pics in a sec.

here are the pics. I tried to get a close up of one of the nodes.

i mean that long without light could have stressed them out..but if they keep growing then dont worry about it..stress could cause hermie if you didnt know