Various masaail of Nikaah

Q: I had multiple opportunities to go to other countries but due to my wife's fertility issues I had to sacrifice my career and stay in India itself. 

For the first child, I had to sacrifice many onsite travels as I had to be in India as ease of treatment is good here. When she got pregnant, I got US 2 Years and then Canada 2 years, Germany but I had to decline as we planned for a 2nd baby and then again she needed treatment. We struggled a lot to find good doctors during treatment so I always believed going out would again delay the process and it will take time. 

Kindly help me how could I convince myself, sometimes I get thoughts like why it is happening to me. 

Also I have my mother who is staying with me, even though I have an elder brother but she prefers so stay with me. Kindly guide how do I proceed in this case too.

Q: 

1. Is spending the night with the husband the right of wife? Can the mother of the husband interfere with that and make the husband sleep with his parents just because she is the mother? 

2. Does the husband need his mother's permission to take his wife out on some outing?

Q: Can the husband disallow the wife to use phone or social media to talk to her parents etc. without any reason when the wife does no haraam acts?

Q: My husband didn't clarify about his previous marriage to me in our Nikaah certificate. He mentioned that he was divorced from his previous marriage but after our marriage he disclosed to me that his ex is still his wife and I am his second wife. 

My question is that, is our Nikaah done or because of his statement our Nikaah is not valid? Please clarify.

Q: I would like to know as a wife, whether it is a right of mine that my husband spends some quality time with me after work and Esha or is it just me being demanding and ungrateful which is how my husband sees it. Most nights he is at his friend's houses till 11 or 12 and then comes home when I'm already asleep after I've been waiting for him for hours. 

Anytime I bring up an issue, he tells me the hadeeth about the women being the greatest inhabitants of jahannam due to their ungratefulness and keeps saying it's in my nature as a woman. I need to know whether I am just being that type of woman and I just need to be fine with not seeing my husband and just be content that he sleeps next to me at night when he does come home.

Q: Is it permissible for a husband not to have access/communication with his wife for 3 months based on a decision which was by her family... We are separated for 3 months..

Q: What is the ruling on a girl seeing her family after she is married? Is it permissible that her husband can forbid her from seeing her family and her friends? In the event that the husband has no valid reason for forbidding the wife from seeing her family.

Q: I've heard girls say that they romanticize their future by making up imaginary scenarios of them with their imaginary (non -existent) husband like holding hands, forehead kiss, etc. Is this fantasizing? Will one be sinful?

Q: Is getting married to someone so that she can make khidmat of his parents correct or should the decision be made more on shahwat for the person?

Q: Is it ok if I don’t want to get involved in polygamy because of love for my wife? Someone said that it is sinful and exaggerating, is it true? Someone said this this statement and it disturbs me. I don’t think it’s sinful because it’s not obligatory and it’s totally a man's choice. Please guide me.