Before I have a breakdown I always dream of blood...?

I have had two breakdowns where I checked into the ER because I wanted to kill myself and had done parasuicidal harm to myself, but both times leading up to those visits I frequently dreamt of blood. For instance, once I dreamt that I was in a clroom and blood was leaking through the floorboards from the room above and once I dreamt that I was in rowboat sailing through a river of blood because my city had been flooded. It is merely a coincidence. Should I take it as a warning sign? I have a Borderline Personality and I’m currently stable and medicated