Oaths & Vows

Taking an oath not to talk to one's family members

Q: I recently swore upon the Quran in anger that I would not talk to my family members in a fight and if I do, may Allah punish me and give me a terrible death. Allah knows that I did it merely out of anger which I regretted instantly. But now I fear of this stupid and poor act of mines. How can I repent? Is there anyway Allah will forgive me and not punish me?

Does a promise constitute an oath?

Q: If one makes a promise by accident or something they don't want to say comes out of their mouth as a promise to Allah, does the promise have any effect? If a married woman says Allah, I promise not to have sex with anyone and thinks she also included her husband in this, has she promised not to have sex with her husband and will she be sinful to have sex with her husband?

What if a woman explicitly promises not to have sex with her husband by mentioning her husband in the promise. Will she be not allowed to have sex with her husband and will she be sinful for having sex with her husband?