Now is the time to calm your mind and slow down and stop worrying so much.  I know it may not be easy, but excessive worrying doesn't make anything better and it sure doesn't stop anything from happening.  

Instead, worry about what you can control.  Come up with a plan.  Get organized about what freaks you out.  When you have a plan, worrying can cease, and you can get back to normal life as best you can.