Karli, welcome to the forum! The cheese looks great, and if it tastes great, then it IS great!
What culture did you use? Gouda is often made with an "aroma" culture, i.e., one that includes L.l.diacetylactis as one of the bacteria; this produces CO2 by acting on the citrate in the milk -- and thus you get small holes in the cheese. That's what yours looks like to me, though I am a long, long way behind many others here on the forum. The other possibility is "mechanical" holes from the curd not fully knitting, but again it doesn't look like that to me.
In any case, a cheese for you for a great looking result!