Is this stretching?

So this is my 1st grow and so far everything's going great. However, one thing I've noticed is "stretching"(or atleast I think it is) from my under branches. I wanted to know is this "stretching" because of no side lighting? The branches are starting to grow upward inbetween the upper branches. Any help is greatly appreciated.
My first plant

My second plant

It looks like a little stretch searching for light. It's normal, once they are more exposed to light they will start to grow shorter intervals between nodes.

plant looks good to me

Thanks you guys. I was concerned because this is all new to me and I've never seen this before in any of the posts and stuff I've read.