I have PMDD and am starting to think I have misdiagnosed BPD (it runs in my family and I have endured a lot of trauma throughout my life.) I am so dependent on my long distance boyfriend that I create scenarios that he is cheating on me in my head to the point where I obsess over it. I also have an unhealthy obsession with him- I think about him more than I would like to. Then I end up letting my paranoia take over and start an argument. I have an intense fear of abandonment and feel like I’m always going to ruin everything good in my life.