Tired of it all

So my mother drinks a lot and she wounders why i dont leave my childern with her. Well ofc shes drinking and yelling at me im pretty sure i might be pregnant and im honestly afraid to tell her. She has never been their for me and she abandoned me when i was 1. I dont know what to do my boyfriend and i are trying to a new place but ilost my job the company i worked for closed down it just seems like everything is going down hill so fast i feel so overwhelmed and i dont know what to do.