When we first got married. my husband was a kind and gentle man but after several months, he became a different person. Not wanting me to be out, screamed at me. He didn't want to go find a job and was expecting me to support him. He refused to talk about it and said he's sick but never goes to the doctor. He stopped going to Jumah and stopped leaving the house, couping himself in the house and his room. When I got pregnant, things started to get worse. he went crazy like. I had come complication with my preganacy and had my baby extremely early. While resting in bed, he wanted me to abort my child saying that he doesn't want to have a monster baby and to get it abort. When I didn't want to, he got very upset with me. My child is now 3 years old and healthy to an extent, thank God. He doesn't support me or my child, doesn't like my mother who is living with me in my house, not his. When my child was extremely very sick, he doesn't want me to take my child to the emergency room. He slept all day and stayed up all night, did light stuff around the house (fixing and cutting grass). He did more screaming and threaten to kill me me. I tried to keep the family together but it was hurting me too much. Dreadful coming back home from work each day. I've had enough and finally kicked him out and he demanded that I pay him, I had to sell my car and give him the money for him to get out (the money he took was not something I was willing to offer him, he forced me). He's been out of my house for over 1.5 years now. Shen i asked for a divorce, he said he wanted all his mahr (which he used my money to buy for me - he admitted before) back, keep in mind he has not supported me or my child in any way and was living in my house hold.
I have the following questions:
Should I return the mahr to him although he hasn't supported me or my child?
Islamically, am I considered divorced because of his lack of support for the extended period even though he never say "talaq"