I have a young black silkie mix about 7 months old, she laid her first egg two weeks ago (she seemed to be very down and in pain when she laid the first egg) it came out looking good. Her sister is laying eggs regularly every three days or so but the black one has not laid a single egg since then. She seems normal when she is up and about but she has slow digestion and bloated crop in the mornings. Otherwise she seems to be fine but I’m wondering how I know if she is egg bound? Does it happen a lot that first layers might not lay for a while after the first?