Birth control

I’m 15 and my mom has been making be on birth control, I got on the pill and I threw up and was nauseous all the time so I stopped it, I’m now on the patch and it makes me nauseous and sad all the time, me and my bf have protected sex and she knows that but still makes me be on birth control, I’ve also explained to her I don’t like putting extra hormones and stuff in body, that’s literally why I don’t eat meat and she doesn’t understand. What’s a good way to tell her that I don’t want to be on it but I’m still going to be responsible. I’ve tried explaining to her why I don’t like being on it and she doesn’t care.