Advice please

I’ve been having issues at home for a couple of months now and last night was my breaking point with my parents I’ve been dating this guy now for almost a year I love him my parents don’t mind me having a boyfriend what bothers them is that I’m having sex I’m 20 years old I’m on birth control I’m taking care of myself I’m a college student I work for myself and my needs my mom says I’m a disappointment that I’ve betrayed her I ruined the family she insulted me last night just because I was over my boyfriends house mind you all we did was eat and sleep but she has this narrative that all I’m doing with him is just having sex and guys it’s normal between a couple she accused me of being pregnant bc I haven’t gotten my period when in reality it’s just because I’m on birth control she’s making such a big deal I understand I live under their roof but it’s no need to insult me and even slap me over this my father didn’t even defend me I tried to reason with her have her understand I’m not doing anything wrong overall she just wants me out the house bc I’m having sex I can’t reason with her even if I try to sit and talk to her she went hysterical on me I just need some nice words my boyfriend offered me to go live with him but I dont want to I don’t want to be a burden he lives with aunt and its just a big step for me to take with him I know i do want to move out it’s too toxic I’m not happy at home I don’t have enough money to support myself I only work part time and I just want to leave overall but idk how much money I really need to get myself out from home I just need some advice what to do