It took me years to notice that this happens to me more frequently when I am emotionally charged. It took me some years more to discover that this is part of having rhesus negative blood. A poll here showed GLPers are 3 to 4 times likelier to have this blood type than average; only crossbred animals (mules, for example) show this in the animal kingdom, i.e. it implies that those with rhesus negative blood are cross breeds between humans and, insert whatever you think reasonable here (annunaki, to my mind). That's a short summary of many years of interest in what the OP is posting about.