I feel your pain. I have an EE that is 23 weeks... nothing. I have a leghorn, a barred rock, and a RIR that are all 20-21 weeks--still nuttin'. My welsummer is only 18 weeks-ish, so I don't expect anything from her for a while. But a 20-week-old white leghorn SHOULD be laying eggs, or at least one would think so. She's got a giant red comb and big red wattles and a bright BRIGHT red face for a couple of weeks now, but still nuttin'. She walks around this yard struttin' and squawkin' the "egg song" and squattin' from time to time, but still... nuttin'. This has been going on for WEEKS. I've said it before... I think I have a flock of duds.