Welcome to iMore!
First, try a different network connection and see if that helps you. That should let you know if it's a network issue.
Next, give a reboot a try by pressing and holding the home and sleep/wake button until you see the Apple logo. (fixes most iOS ailments.)
Next, you can try clearing your Safari website data by the following:
While you're at it, go ahead and join the forums if you haven't and let us know if any of those options worked for you. If not, we'll try our best to work through to resolution!
Good luck!