Give it at least another week. "Almost" two weeks from emergence is pushing it a bit to expect to see eggs. And queenless for a good three weeks is telling me you are a little loose with the timeline, as a frame of eggs will not have produced an emerged queen that fast, and certainly not a laying one. If you are worried, give them another frame of brood to tide them over. Chances are real good they will not make queen cells this time.