All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
We ask Allaah to relieve your distress, facilitate your affairs, and rectify your relation with your husband. We advise you to turn to Allaah in sincere supplication; verily, Allaah answers the supplications of the distressed ones and relieves their hardship; He says (what means): {Is He [not best] Who responds to the desperate one when he calls upon Him and removes evil and makes you inheritors of the earth? Is there a deity with Allaah? Little do you remember.} [Quran 27:62]
The Muslim husband is commanded to treat his wife kindly and gently; Allaah, The Exalted, says (what means): {... And live with them in kindness ...} [Quran 4:19] Abu Hurayrah reported that the Prophet, sallallaahu ‘alayhi wa sallam, said: "Be kind to women." [Al-Bukhari and Muslim] What you mentioned about your husband contradicts these Sharee‘ah guidelines. Moreover, anger is the source of many evils; therefore, the Prophet, sallallaahu ‘alayhi wa sallam, warned against it as he, sallallaahu ‘alayhi wa sallam, advised one of his companions, "Do not get angry!" [Al-Bukhari]
When the husband says to his wife "You are divorced," then this statement is an explicit formula of divorce, and divorce takes effect as a result. The divorce issued during the woman’s menstrual period is a religious innovation, yet it takes effect according to the opinion of the majority of Muslim jurists. This is the view adopted by Islamweb as well; please refer to Fatwa 81864. As for the divorce during pregnancy, it is in accordance with the Sunnah, and it is not a religious innovation in the first place; it also takes effect according to the consensus of scholars.
Whenever the husband issues a divorce, it then takes effect, and the registration of the divorce in court is irrelevant in this regard. In case of the first or second divorce, i.e. an irrevocable divorce with minor separation, if the ‘iddah expires, then the husband can still take his wife back in marriage, but with a new marriage contract. Therefore, if your husband wishes to take you back in marriage, you need to conclude a new marriage contract with the approval of your wali (guardian), and there is no need to inform your mother of it. Please refer to Fatwa 82541 about the types of divorce.
If he refuses to take you back in marriage, then you can try to convince him, and you may seek the intercession of whomever you hope would be able to convince him. If he persistently refuses to take you back in marriage, then you should graciously accept that; hopefully, this would be for your best interest, and Allaah, The Exalted, may compensate you with a better husband. Allaah, The Exalted, says (what means): {But if they separate [by divorce], Allaah will enrich each [of them] from His abundance. And ever is Allaah encompassing and wise.}[Quran 4:130] Try to be as gentle as possible when you inform your mother of your divorce so as to avoid the bad impact that it might have on her health.
Allaah Knows best.