Seriously, take a year or two off. I graduated in 2011 and was heading straight for grad school, but was dissuaded by a professor at my undergrad school. She's one of the few honest professors I've met. She was realistic about the job market and told me straight up about it. I'm thankful for her guidance. I've taken time to tutor in writing at a local university and have since started a program getting my teaching license here in Ohio. I plan on reapplying after I get my licensure (it was my back-up for any problems getting a job following the Phd. Seems silly now, but I'm happy to be taking some kind of class, even if it's not History. I missed school after not being in it for a semester). Regardless, take a breather. Work for a while, even if it's in something basic. Get a feel for life away from school and if you're anything like me, you'll miss it and be eager to learn again.
Good luck with everything!