Breast feeding

Is anyone on here a first time mum? I am 20 weeks pregnant with my first, and I’m feeling pressured into breast feeding:-‘as that’s what breasts are there for....’ I can’t explain how much I literally don’t want to, the thought scares the life out of me (due to a previous domestic violent relationship where he raped me and hurt me 😔) I understand where he’s coming from but I mentally and emotionally can’t allow myself to try it. Does anyone have any advice for me to try and allow myself to at least try?