The bubbles tend to be small enough that you likely won't see them - much like fizz in a bottle of soda. You'll taste them instead. Also, it will likely take longer than a day and a half for it to be bubbling. A week, more like, though that will also depend on exactly how you made your kimchi, etc.
If you're due to refrigerate, I'd say put it in the fridge, give it a couple days. Then smell test: generally, if kimchi smells like kimchi (and not like rotting garbage), it's doing fine.