Since I don't know the exact 'ek rishta sajhedari ka' story, it might be a story about a relationship (as 'rishta' can mean relationship in some languages). It could be about friendship, family or a more complex social connection. Without more details, it's hard to tell the full story.
Since I have no knowledge of this 'ek rishta sajhedari ka' story, it's difficult to say the main plot. However, if we assume 'rishta' as a relationship and 'sajhedari' as some form of partnership, it could be about how they support each other, face conflicts and resolve them to make their relationship stronger.
I'm not entirely sure as I don't have the specific Hindi story in front of me. 'Qabar ka azab' might refer to some kind of punishment or horror related to the grave in the context of a Hindi story. It could be about a character facing some sort of retribution that is associated with the afterlife and graves.
Without knowing the particular Hindi story, we can talk about general ways of having a baby. In modern medicine, there are also assisted reproductive technologies like in - vitro fertilization for couples who have fertility issues. But in traditional and natural ways, a woman's body needs to be in a good state. Her hormonal balance should be maintained. Also, a positive environment and emotional support during pregnancy play a crucial role in the process of giving birth to a child.
As I don't know the 'hawas ki ek ratt hindi story', I can't offer a summary. It would be great if you could share more about it, such as where you heard it from or any key elements in it.