So you think that somehow your body is designed to ingest plasma now?
That would require major genetic changes, hopefully you didn't ingest anything in hopes of making this "Change" . . . You do understand that there is no such things as vampires, and that if you did ingest something that is now making you sick, you might consider reaching out to a medical professional. If you continue trying to change yourself into something of myth and lore, you might want to reach out to a phsychological professional as well.