About 5 days ago you fell and hit your head no symptoms for a few days apart from a bump but last 2 days you have felt a little unsteady on your feet could this be serious also im on warfarin?

Yes it can be serious my Mom had the same thing happen to her, it turned out she had a major blood hemorrhage in her brain, get in for a cat scan immediately, this is very serious. If they put you on a waiting list call every couple of hours to see if there has been any calculations, hopefully this will annoy the person answering the phone so they let you in right away.