Concern for internal laying

[elizabethmoro]

My 8month old crested cream legbar (opal) pullet has yet to lay an egg. Tonight I tried to feel her sit bones but could not feel them. Her lower abdomen/vent area feels like a water balloon. She is otherwise bright and alert and eating/drinking normally.

Has this happened to anyone else? I am going to call the vet in the morning.

Attached are photos including her vent.