All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
If that man treats you in the way you mentioned, with abuse, beating, and lying to you, then he is not a husband who lives with his wife in kindness, while Allah, The Exalted, commanded husbands to live with their wives in kindness, we have already explained in Fataawa 86618 and 88304.
A healthy marriage is based on mutual respect between the spouses and each of them fulfilling their obligations towards the other.
We have explained the rights of spouses over each other in Fatwa 85308.
Your husband may be more aware of the expression by which he divorced you. If he said to you: "Anti Taliq (You are divorced)", then this is an explicit expression of divorce and divorce takes place even if the husband did not intend it; there is an agreement between the scholars of Fiqh in this regard. If he said to you: "Talaq (divorce)", then this is also an explicit expression of divorce according to the view of most scholars. But some others are of the view that this is a metaphor of divorce and divorce does not take place except with intention.
Aborting the fetus before forty days is something which some scholars allowed, and some of them absolutely forbade it, even if it was only at the Nutfah phase. This is the view we adopt in Islamweb, as we discussed in Fatwa 85970. Therefore, you must repent.
If your husband has become righteous, or that you agree to be patient with him, then your guardian has no right to prevent you from going back to him.
Allah Says (what means): {And when you divorce women and they have fulfilled their term, do not prevent them from remarrying their [former] husbands if they agree among themselves on an acceptable basis.} [Quran 2:232]
Al-Bukhaari reported that the above verse was revealed about Ma’qil ibn Yassar whose sister was divorced by her husband who left her until she had completed her waiting period, and then he wanted to remarry her, but Ma‘qil refused. He said to the man: “I married her off to you, and honored you, but you divorced her and now you come to marry her again. No, by Allah, she will never come back to you again. He was a good man and she wanted to return to him. So, Allah revealed this verse (which means): {… do not prevent them…}. Then, Ma’qil said: “Now I will return her, o Prophet of Allah.” So, he married her off again to him.
It should be noted that if your waiting period has expired, then he cannot remarry you except with a new marriage contract.
We advise both of you to avoid problems, and if any problems occur between both of you, then you should solve them without the intervention of others, as they may intervene to spoil your relationship instead of reconciling between you.
Allah knows best.