Brother seeing one naked

Q: In December 2015 I was in the bathroom taking a shower and I didn't lock the door and then I was done taking a shower and came out of the bathtub to put my clothes on when suddenly one of my little brothers who was in his mid twenties opens up the bathroom door and sees me naked and I was feeling so shameful so I quickly closed the door shut... Also I had this planned in my head that I vowed I would never show any man my body except for my spouse that I do nikaah with... So basically I was saving myself for my husband! The upper portion of my body still feels kind of stiff after he saw me naked and uncomfortable too and I sort of feel like I've lost my jannah... I mean don't you think it is unlawful to see your older sister's naked body and also it is taking the rights of her away... Basically he sent me a waswasa to keep the door unlocked before satan enters... so it looks more like he planned on peeking in... What should I do?

Fear of wearing niqaab

Q: I live in America and I really want to wear the niqab but my mother and father say not to because of the atmosphere in America nowadays. What should I do? I mean there is no way that I can wear the niqab with my mother and father telling me not to and they will not let me because they say that if the condition of some country is not good then you cannot do such a thing.

Breastfeeding in front of one's mahrams

Q: My sister in law, that means my husbands younger sister, when she feeds her son breast milk, she takes her breasts out and feeds her son in an open room. My father in law, my brothers in law and my husband are all living together. When she breastfeeds her son, she doesn't close the room door but keeps the door wide. My husband went in that room to take his things but he didn't mean to go see her with an ugly mind. I too didn't mean that my husband is going to the room with an ugly mind. I know he is going to take his things which is in that room but when I was talking to my husband about this matter, I ask my husband "How do you have permission to go in that room when she was taking her breasts out, it is not permissible in Islam." Then my husband complained that I have an a ugly mind about his sister and he says that I'm an ugly woman and I'm suspecting their pure relationship. It's not like that wallahi, as a wife my husband hasn't seen my whole body. It's hurts me. That's why I am asking regarding his sister. He says that he has the total permission to go in front of his sister even if she feeds with her breasts out. Does my husband have permission to see his sisters body parts as a brother?

Should a wife listen to her husband or parents?

Q: I am married and pregnant with my first child. Currently I am staying with my parents in Saudi while my husband is in Kenya. I came for iqamah renewal. My husband sent a ticket for me to return but my parents got involved by not letting me go. Now my husband sent a text saying that he doesn't want me because of my parents. I tried calling and texting him but he isn't replying nor is his sister replying. Is getting away from my parents be wrong Islamically? I don't know what else to do.