How long after hiving a swarm before the queen starts laying? I got one 8 days ago, and they have drawn out a good bit of comb, but almost all of it is being filled with nectar. I don't see any evidence of the queen (no eggs or larvae). Of course, it may be there and I just didn't see it.

I have them in a deep Nuc, and I added a second box today to give them more room (I don't have any extra 10 frame woodenware right now), but I'm worried that I may not have a queen. Maybe I should just combine them with one of my weak hives? How long should I wait to see?