The Question and Answer section for The Yellow Wallpaper is a great resource to ask questions, find answers, and discuss the novel.
The narrator believes that is she reveals what she sees to John he will make fun of her. She is also afraid that he'll take her away before she exposes the secret of the woman in the wallpaper.
Over the course of the story, new patterns appear in the wallpaper, and the wallpaper takes on a unique scent. At night, the wallpaper seems to shake, something the narrator attributes to the woman inside, struggling to get free from her prison.
The only males is the text are John, and a doctor who is mentioned but briefly. Thus, both of these men share the trait of thinking they know exactly what to prescribe for their diagnosis of the narrator's illness.