My husband intends remarrying his first wife

Q: I am facing a difficulty in marriage. My husband had a love marriage before, then for some reasons they split up and he got married to me. Its been 6 years now and we have two kids but my husband have never forgot her and he mistreats me when he thinks of her. Now after 7 years of their split up he has contacted her and asked her to marry him again. In this country there is no rule for two wives and I also heard that in Islam it is allowed if you can treat them equally, which is not possible here. She has told him not to do so and fix his relation with me but he is still insisting on her by sending her love mails etc. I am worried about myself and my kids and cannot find any way, besides I feel like it is not possible for me to leave him as I love him and he is the father of my kids. Even he knows that his relation with her won't last for long but still there is some thing that is pulling him in that direction. I am reciting "Surah Dahr" 11 times for 11 days and "Ya Wadoodo" 41 times every day. In anger he has said several times that he divorced me but he doesn't believe that one can be divorced just by saying. If some one can help me in this I will be great full.

Zawaal time

Q: What is zawal time? How much time before zohar Salaah does it start? Is there any zawal time before maghrib? If someone is reading/reciting Quran Sharif and zawal time commences, does he have to stop reading?

Reciting Ameen softly

Q: I want to know about the saying of ameen in low tone according to Imam abu hanifa as it is contrary to the practice of the Sahaba. Please elaborate. I also know that ameen is a dua and according to quran dua should be said in a low tone but why should we do it when no Sahabi has done it?

Husband and wife spending time together during haidh

Q:

  1. Unknowingly about menstrual, wife & husband spend time together. What does she have to do?
  2. Is it ok for her to make ghusul or she must make ghusul?
  3. In her menstrual cycle time or days she  has to walk through the Musjid a little through the mens section & she has to walk in the middle of the ladies main section to get to the school where she teaches. What can she do about this?