My first chicken (leghorn) just started laying last weekend. She laid an egg on Saturday, Sunday, and Monday in the nest box. 4 days have past and she hasn't laid any more. Is this fairly normal for a newly matured hen? Or should I be worried that she's carrying some stuck inside? FYI - Shes around 3 other hens +1 roo that are a couple weeks behind her (if that matters at all).