Mental harassment and cheating

I got married in 2014....having a 3.5 years old baby.when I met with my husband I was a form 2 drop out...I got pregnant.... N he begged me to get him a baby that he loves me he will take care of me...n my baby...even he promised. to take me back to school...I av bn leaving with my husband treating me like a small kid because I was not that much exposed.... He could buy everything in the house even the small thing like salt but not to give you money I av bn leaving like a slave....but I was okey because I trusted...n believed in him....before I got married in my account... I had only 100k....of which I used all of it within the very 1st year..on my self n our house because he was not providing everything.... N by then he was having a good job....he was manager on sales and marketing at Nokia....he got my baby on 2015...n that's when problems. Started... After I left the hospital.... I suspected he was sleeping with my house girl....n it was true....because the HG confessed.... That's when my trust for him gone....n I started feeling I don't deserve it....our marriage life became on on off....utill last year that's when things went completely worse....when I discovered that he has numerous girl friend....he pushed me away n I decided to get out of the house n I look for another life somewhere else....I left but the world gave me the worst....you know a small girl who has bn in marriage for some years....she knows...nothing I had to come back to his house and I said to myself I'll do the right even when he is wrong to see whether this marriage will work...but nothing is changing....he could sleep outside for a week....come home for 2 days n then go back to that woman called jedidah...like that..that's the routine....because am staying to their premises....I can't tell him anything n every time I question him on his behavior he become violent n he could pack again n leave...every time he tell lies to pple who am close to....n they believe in his lies every time i look am the one who is bad.....because am this kind of a person... Who don't like to expose her problems to pole....n he is taking advantage of that...through text I av come to adastand that he is now with this woman and they want to start a family together when am still in his house....n every time he is with him he don't receive....my calls....n every time he comes home n find that am not in the house....he can't.even call me to know where I am....all he can do is to lock the house with different padlocks...most of the times is when I hire welding guys to break the doors for me to get in ....I don't know what to do n I don't want to leave my house....my daughter she is just 3...n if I do within a month he will marry.....he is saying that am mentally harassing him....he is creating me like a sadist....please suggest me