I have blackouts/seizers at random or brought on by blood or gore or the though of either also my heart beats fast an vibrates at time is this urgent?

Could be serious: Blackouts or seizures can be serious If there is an underlying neurological or cardiac problems that could be life threatening and should be addresses ASAP Even if the origin is a psychological reason Which triggers a physiological response which causes you to pass out that needs to be addressed Neuro & physical exams are in order along with a psychiatric evaluation and then treatment plan