Pages not loading

When I visit my site, more often than not the pages don’t load. It’s not that they’re loading slowly, they just don’t load at all. All of the header content and menus load fine, but the page content doesn’t display. I have to hit refresh to get the content to come up. This problem is more apparent on the pages that use the shortcodes to display the content. Any suggestions? The site address is http://www.creativehomecabinetry.com