I need advice :(

My Daddy and I have been together for nearly a year now, we started to develop a ddlg dynamic a few months ago. Lately though we've been having a lot of issues, not just within the dynamic, but all over our relationship. We've been having a lot of fights, about very small things, and often times it ends with us talking about "what we should do" (which is a masked way of saying should we break up). I have a lot of issues with my family, so he often thinks I'm hiding things they're doing from him, but I'm not. I have a long history with PTSD and BPD, self harm, eating disorders, but I have lost many of the available things that helped me deal with it. So I'm just very stressed, as is he, because of his work, college, and his family not exactly liking me. So I just need advice on how to get through this, how to figure out what's going on? We talk all the time, and try, but I'm just very broken up about it, and want to know if you've been here and how it worked for you. Thank you xXx I apologize for any format issues, I'm on mobile...

TLDR: Daddy and I fight a lot, and I'm really struggling with what to do, any advice or personal experience is helpful