Mouth Sores?

We're back from vacation. We took a trip to Gatlinburg to let Jonas see the christmas lights.  Pain is about an 8. Naproxen isn't helping and it taste like POOP. My mouth! My lips are sore all over, and my tongue and throat, too. Not sick hurt, just painful. I do not have any sores in my mouth but the corners and where my lip meets my gum have a few spots where they are cracked. I can't eat much, everything burns. Even water.