I fucking hate that I have to hear this bullshit

So exactly five minutes ago I had a fight with my mother about being in the LGBTQ+ community. I am a bisexual woman and I am still in the closet. Since I was thinking about coming out to my mother I was trying to make some set up for coming out. And when there was a lesbian woman in a relationship in the movie we were watching I basically ask her what she was thinking about it. And she started talking about it being a ‘sickness’ or like faking it for attention. Saying that our religion doesn’t allow it, it’s a sin . So I was trying so hard to shut my mouth and end the conversation but she keep talking and talking. When I say that I support them she told me I have high tolerance and my tolerance is stupid. I fucking left her alone and shut my fucking door. I am about to cry but thanks to my anger I am fine right now. Someone please help me what should I do ?