Custody of my child.

I have been married since 2012, ever since then have had a lot of problems with my husband. We didnt even have physical relationship. Then in 2014, we had physical relationship and i conceived for ma son. Ever since then we've not been together till now. Lot of problems arised after i conceived for ma son and he did nothin for the both of us and he and his mother would torture me so much and hes also beaten me and ma chil who was jus 40 days old. All said and done his father told me to get out of his house and i left tht house in 2016 April. Ever since then he hasnt called or msgd askin how ma son is and nvr bothered to reconcile. I gave him a time of 1 year to reconcile but he didn't bother. I applied for divorce and now he wants ma son. I cant live without ma son and i dont think hes father enuf to evn gain visitin rights. In Nov 2017 I hpnd to meet a person and tht led to fallin in love with him. Ma son nvr knew who's his father and the person made me feel so secured tht i introduced ma son to him as his father and thy bond so well tht ma son doesnt wan me but him. Thats how strongly thy've bonded. Now i happen to also b pregnant. Will all ths make me lose ma son's custody. Pls help me. Ths has put me to sleepless nights...